/src/openssl/providers/implementations/ciphers/ciphercommon.c

Source
/*
 * Copyright 2019-2025 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/*
 * Generic dispatch table functions for ciphers.
 */

/* For SSL3_VERSION */
#include <string.h>
#include <openssl/prov_ssl.h>
#include <openssl/proverr.h>
#include "ciphercommon_local.h"
#include "prov/provider_ctx.h"
#include "prov/providercommon.h"
#include "internal/skey.h"
#include "internal/e_os.h"
#include "crypto/types.h"

#define cipher_generic_get_ctx_params_st ossl_cipher_get_ctx_param_list_st
#define cipher_generic_set_ctx_params_st ossl_cipher_set_ctx_param_list_st
#define cipher_var_keylen_set_ctx_params_st ossl_cipher_set_ctx_param_list_st

#include "providers/implementations/ciphers/ciphercommon.inc"

/*-
 * Generic cipher functions for OSSL_PARAM gettables and settables
 */

const OSSL_PARAM *ossl_cipher_generic_gettable_params(ossl_unused void *provctx)
{
    return ossl_cipher_generic_get_params_list;
}

int ossl_cipher_generic_get_params(OSSL_PARAM params[], unsigned int md,
    uint64_t flags,
    size_t kbits, size_t blkbits, size_t ivbits)
{
    struct ossl_cipher_generic_get_params_st p;

    if (!ossl_cipher_generic_get_params_decoder(params, &p))
        return 0;

    if (p.mode != NULL && !OSSL_PARAM_set_uint(p.mode, md)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.aead != NULL
        && !OSSL_PARAM_set_int(p.aead, (flags & PROV_CIPHER_FLAG_AEAD) != 0)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.custiv != NULL
        && !OSSL_PARAM_set_int(p.custiv, (flags & PROV_CIPHER_FLAG_CUSTOM_IV) != 0)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.cts != NULL
        && !OSSL_PARAM_set_int(p.cts, (flags & PROV_CIPHER_FLAG_CTS) != 0)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.mb != NULL
        && !OSSL_PARAM_set_int(p.mb, (flags & PROV_CIPHER_FLAG_TLS1_MULTIBLOCK) != 0)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.rand != NULL
        && !OSSL_PARAM_set_int(p.rand, (flags & PROV_CIPHER_FLAG_RAND_KEY) != 0)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.etm != NULL
        && !OSSL_PARAM_set_int(p.etm, (flags & EVP_CIPH_FLAG_ENC_THEN_MAC) != 0)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.keylen != NULL && !OSSL_PARAM_set_size_t(p.keylen, kbits / 8)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.bsize != NULL && !OSSL_PARAM_set_size_t(p.bsize, blkbits / 8)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    if (p.ivlen != NULL && !OSSL_PARAM_set_size_t(p.ivlen, ivbits / 8)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    return 1;
}

const OSSL_PARAM *ossl_cipher_generic_gettable_ctx_params(ossl_unused void *cctx, ossl_unused void *provctx)
{
    return cipher_generic_get_ctx_params_list;
}

const OSSL_PARAM *ossl_cipher_generic_settable_ctx_params(ossl_unused void *cctx, ossl_unused void *provctx)
{
    return cipher_generic_set_ctx_params_list;
}

/*
 * Variable key length cipher functions for OSSL_PARAM settables
 */

const OSSL_PARAM *ossl_cipher_var_keylen_settable_ctx_params(ossl_unused void *cctx, ossl_unused void *provctx)
{
    return cipher_var_keylen_set_ctx_params_list;
}

int ossl_cipher_var_keylen_set_ctx_params(void *vctx, const OSSL_PARAM params[])
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    struct ossl_cipher_set_ctx_param_list_st p;

    if (ctx == NULL
        || !cipher_var_keylen_set_ctx_params_decoder(params, &p)
        || !ossl_cipher_common_set_ctx_params(ctx, &p))
        return 0;

    if (p.keylen != NULL) {
        size_t keylen;

        if (!OSSL_PARAM_get_size_t(p.keylen, &keylen)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        if (ctx->keylen != keylen) {
            ctx->keylen = keylen;
            ctx->key_set = 0;
        }
    }
    return 1;
}

void ossl_cipher_generic_reset_ctx(PROV_CIPHER_CTX *ctx)
{
    if (ctx != NULL && ctx->alloced) {
        OPENSSL_free(ctx->tlsmac);
        ctx->alloced = 0;
        ctx->tlsmac = NULL;
    }
}

static int cipher_generic_init_internal(PROV_CIPHER_CTX *ctx,
    const unsigned char *key, size_t keylen,
    const unsigned char *iv, size_t ivlen,
    const OSSL_PARAM params[], int enc)
{
    ctx->num = 0;
    ctx->bufsz = 0;
    ctx->updated = 0;
    ctx->enc = enc ? 1 : 0;

    if (!ossl_prov_is_running())
        return 0;

    if (iv != NULL && ctx->mode != EVP_CIPH_ECB_MODE) {
        if (!ossl_cipher_generic_initiv(ctx, iv, ivlen))
            return 0;
    }
    if (iv == NULL && ctx->iv_set
        && (ctx->mode == EVP_CIPH_CBC_MODE
            || ctx->mode == EVP_CIPH_CFB_MODE
            || ctx->mode == EVP_CIPH_OFB_MODE))
        /* reset IV for these modes to keep compatibility with 1.1.1 */
        memcpy(ctx->iv, ctx->oiv, ctx->ivlen);

    if (key != NULL) {
        if (ctx->variable_keylength == 0) {
            if (keylen != ctx->keylen) {
                ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
                return 0;
            }
        } else {
            ctx->keylen = keylen;
        }
        if (!ctx->hw->init(ctx, key, ctx->keylen))
            return 0;
        ctx->key_set = 1;
    }
    return ossl_cipher_generic_set_ctx_params(ctx, params);
}

int ossl_cipher_generic_einit(void *vctx, const unsigned char *key,
    size_t keylen, const unsigned char *iv,
    size_t ivlen, const OSSL_PARAM params[])
{
    return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx, key, keylen,
        iv, ivlen, params, 1);
}

int ossl_cipher_generic_dinit(void *vctx, const unsigned char *key,
    size_t keylen, const unsigned char *iv,
    size_t ivlen, const OSSL_PARAM params[])
{
    return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx, key, keylen,
        iv, ivlen, params, 0);
}

int ossl_cipher_generic_skey_einit(void *vctx, void *skeydata,
    const unsigned char *iv, size_t ivlen,
    const OSSL_PARAM params[])
{
    PROV_SKEY *key = skeydata;

    return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx,
        key->data, key->length,
        iv, ivlen, params, 1);
}

int ossl_cipher_generic_skey_dinit(void *vctx, void *skeydata,
    const unsigned char *iv, size_t ivlen,
    const OSSL_PARAM params[])
{
    PROV_SKEY *key = skeydata;

    return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx,
        key->data, key->length,
        iv, ivlen, params, 0);
}

/* Max padding including padding length byte */
#define MAX_PADDING 256

int ossl_cipher_generic_block_update(void *vctx, unsigned char *out,
    size_t *outl, size_t outsize,
    const unsigned char *in, size_t inl)
{
    size_t outlint = 0;
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    size_t blksz = ctx->blocksize;
    size_t nextblocks;

    if (!ctx->key_set) {
        ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
        return 0;
    }

    if (ctx->tlsversion > 0) {
        /*
         * Each update call corresponds to a TLS record and is individually
         * padded
         */

        /* Sanity check inputs */
        if (in == NULL
            || in != out
            || outsize < inl
            || !ctx->pad) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }

        if (ctx->enc) {
            unsigned char padval;
            size_t padnum, loop;

            /* Add padding */

            padnum = blksz - (inl % blksz);

            if (outsize < inl + padnum) {
                ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
                return 0;
            }

            if (padnum > MAX_PADDING) {
                ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
                return 0;
            }
            padval = (unsigned char)(padnum - 1);
            if (ctx->tlsversion == SSL3_VERSION) {
                if (padnum > 1)
                    memset(out + inl, 0, padnum - 1);
                *(out + inl + padnum - 1) = padval;
            } else {
                /* we need to add 'padnum' padding bytes of value padval */
                for (loop = inl; loop < inl + padnum; loop++)
                    out[loop] = padval;
            }
            inl += padnum;
        }

        if ((inl % blksz) != 0) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }

        /* Shouldn't normally fail */
        if (!ctx->hw->cipher(ctx, out, in, inl)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }

        if (ctx->alloced) {
            OPENSSL_free(ctx->tlsmac);
            ctx->alloced = 0;
            ctx->tlsmac = NULL;
        }

        /* This only fails if padding is publicly invalid */
        *outl = inl;
        if (!ctx->enc
            && !ossl_cipher_tlsunpadblock(ctx->libctx, ctx->tlsversion,
                out, outl,
                blksz, &ctx->tlsmac, &ctx->alloced,
                ctx->tlsmacsize, 0)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }
        return 1;
    }

    if (ctx->bufsz != 0)
        nextblocks = ossl_cipher_fillblock(ctx->buf, &ctx->bufsz, blksz,
            &in, &inl);
    else
        nextblocks = inl & ~(blksz - 1);

    /*
     * If we're decrypting and we end an update on a block boundary we hold
     * the last block back in case this is the last update call and the last
     * block is padded.
     */
    if (ctx->bufsz == blksz && (ctx->enc || inl > 0 || !ctx->pad)) {
        if (outsize < blksz) {
            ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
            return 0;
        }
        if (!ctx->hw->cipher(ctx, out, ctx->buf, blksz)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }
        ctx->bufsz = 0;
        outlint = blksz;
        out += blksz;
    }
    if (nextblocks > 0) {
        if (!ctx->enc && ctx->pad && nextblocks == inl) {
            if (!ossl_assert(inl >= blksz)) {
                ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
                return 0;
            }
            nextblocks -= blksz;
        }
        outlint += nextblocks;
        if (outsize < outlint) {
            ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
            return 0;
        }
    }
    if (nextblocks > 0) {
        if (!ctx->hw->cipher(ctx, out, in, nextblocks)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }
        in += nextblocks;
        inl -= nextblocks;
    }
    if (inl != 0
        && !ossl_cipher_trailingdata(ctx->buf, &ctx->bufsz, blksz, &in, &inl)) {
        /* ERR_raise already called */
        return 0;
    }

    *outl = outlint;
    return inl == 0;
}

int ossl_cipher_generic_block_final(void *vctx, unsigned char *out,
    size_t *outl, size_t outsize)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    size_t blksz = ctx->blocksize;

    if (!ossl_prov_is_running())
        return 0;

    if (!ctx->key_set) {
        ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
        return 0;
    }

    if (ctx->tlsversion > 0) {
        /* We never finalize TLS, so this is an error */
        ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
        return 0;
    }

    if (ctx->enc) {
        if (ctx->pad) {
            ossl_cipher_padblock(ctx->buf, &ctx->bufsz, blksz);
        } else if (ctx->bufsz == 0) {
            *outl = 0;
            return 1;
        } else if (ctx->bufsz != blksz) {
            ERR_raise(ERR_LIB_PROV, PROV_R_WRONG_FINAL_BLOCK_LENGTH);
            return 0;
        }

        if (outsize < blksz) {
            ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
            return 0;
        }
        if (!ctx->hw->cipher(ctx, out, ctx->buf, blksz)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
            return 0;
        }
        ctx->bufsz = 0;
        *outl = blksz;
        return 1;
    }

    /* Decrypting */
    if (ctx->bufsz != blksz) {
        if (ctx->bufsz == 0 && !ctx->pad) {
            *outl = 0;
            return 1;
        }
        ERR_raise(ERR_LIB_PROV, PROV_R_WRONG_FINAL_BLOCK_LENGTH);
        return 0;
    }

    if (!ctx->hw->cipher(ctx, ctx->buf, ctx->buf, blksz)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
        return 0;
    }

    if (ctx->pad && !ossl_cipher_unpadblock(ctx->buf, &ctx->bufsz, blksz)) {
        /* ERR_raise already called */
        return 0;
    }

    if (outsize < ctx->bufsz) {
        ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
        return 0;
    }
    memcpy(out, ctx->buf, ctx->bufsz);
    *outl = ctx->bufsz;
    ctx->bufsz = 0;
    return 1;
}

int ossl_cipher_generic_stream_update(void *vctx, unsigned char *out,
    size_t *outl, size_t outsize,
    const unsigned char *in, size_t inl)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;

    if (!ctx->key_set) {
        ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
        return 0;
    }

    if (inl == 0) {
        *outl = 0;
        return 1;
    }

    if (outsize < inl) {
        ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
        return 0;
    }

    if (!ctx->hw->cipher(ctx, out, in, inl)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
        return 0;
    }

    *outl = inl;
    if (!ctx->enc && ctx->tlsversion > 0) {
        /*
         * Remove any TLS padding. Only used by cipher_aes_cbc_hmac_sha1_hw.c and
         * cipher_aes_cbc_hmac_sha256_hw.c
         */
        if (ctx->removetlspad) {
            /*
             * We should have already failed in the cipher() call above if this
             * isn't true.
             */
            if (!ossl_assert(*outl >= (size_t)(out[inl - 1] + 1)))
                return 0;
            /* The actual padding length */
            *outl -= out[inl - 1] + 1;
        }

        /* TLS MAC and explicit IV if relevant. We should have already failed
         * in the cipher() call above if *outl is too short.
         */
        if (!ossl_assert(*outl >= ctx->removetlsfixed))
            return 0;
        *outl -= ctx->removetlsfixed;

        /* Extract the MAC if there is one */
        if (ctx->tlsmacsize > 0) {
            if (*outl < ctx->tlsmacsize)
                return 0;

            ctx->tlsmac = out + *outl - ctx->tlsmacsize;
            *outl -= ctx->tlsmacsize;
        }
    }

    return 1;
}
int ossl_cipher_generic_stream_final(void *vctx, unsigned char *out,
    size_t *outl, size_t outsize)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;

    if (!ossl_prov_is_running())
        return 0;

    if (!ctx->key_set) {
        ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
        return 0;
    }

    *outl = 0;
    return 1;
}

int ossl_cipher_generic_cipher(void *vctx, unsigned char *out, size_t *outl,
    size_t outsize, const unsigned char *in,
    size_t inl)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;

    if (!ossl_prov_is_running())
        return 0;

    if (!ctx->key_set) {
        ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
        return 0;
    }

    if (outsize < inl) {
        ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
        return 0;
    }

    if (!ctx->hw->cipher(ctx, out, in, inl)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
        return 0;
    }

    *outl = inl;
    return 1;
}

int ossl_cipher_common_get_ctx_params(PROV_CIPHER_CTX *ctx, const struct ossl_cipher_get_ctx_param_list_st *p)
{
    if (p->ivlen != NULL && !OSSL_PARAM_set_size_t(p->ivlen, ctx->ivlen)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p->pad != NULL && !OSSL_PARAM_set_uint(p->pad, ctx->pad)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p->iv != NULL
        && !OSSL_PARAM_set_octet_string_or_ptr(p->iv, ctx->oiv, ctx->ivlen)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p->updiv != NULL
        && !OSSL_PARAM_set_octet_string_or_ptr(p->updiv, ctx->iv, ctx->ivlen)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p->num != NULL && !OSSL_PARAM_set_uint(p->num, ctx->num)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p->keylen != NULL && !OSSL_PARAM_set_size_t(p->keylen, ctx->keylen)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p->tlsmac != NULL
        && !OSSL_PARAM_set_octet_ptr(p->tlsmac, ctx->tlsmac, ctx->tlsmacsize)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    return 1;
}

int ossl_cipher_generic_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    struct ossl_cipher_get_ctx_param_list_st p;

    if (ctx == NULL || !cipher_generic_get_ctx_params_decoder(params, &p))
        return 0;
    return ossl_cipher_common_get_ctx_params(ctx, &p);
}

int ossl_cipher_common_set_ctx_params(PROV_CIPHER_CTX *ctx, const struct ossl_cipher_set_ctx_param_list_st *p)
{
    if (p->pad != NULL) {
        unsigned int pad;

        if (!OSSL_PARAM_get_uint(p->pad, &pad)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        ctx->pad = pad ? 1 : 0;
    }

    if (p->bits != NULL) {
        unsigned int bits;

        if (!OSSL_PARAM_get_uint(p->bits, &bits)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        ctx->use_bits = bits ? 1 : 0;
    }

    if (p->tlsvers != NULL) {
        if (!OSSL_PARAM_get_uint(p->tlsvers, &ctx->tlsversion)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
    }

    if (p->tlsmacsize != NULL) {
        if (!OSSL_PARAM_get_size_t(p->tlsmacsize, &ctx->tlsmacsize)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
    }

    if (p->num != NULL) {
        unsigned int num;

        if (!OSSL_PARAM_get_uint(p->num, &num)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        ctx->num = num;
    }
    return 1;
}

int ossl_cipher_generic_set_ctx_params(void *vctx, const OSSL_PARAM params[])
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    struct ossl_cipher_set_ctx_param_list_st p;

    if (ossl_param_is_empty(params))
        return 1;

    if (ctx == NULL || !cipher_generic_set_ctx_params_decoder(params, &p))
        return 0;
    return ossl_cipher_common_set_ctx_params(ctx, &p);
}

int ossl_cipher_generic_initiv(PROV_CIPHER_CTX *ctx, const unsigned char *iv,
    size_t ivlen)
{
    if (ivlen != ctx->ivlen
        || ivlen > sizeof(ctx->iv)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
        return 0;
    }
    ctx->iv_set = 1;
    memcpy(ctx->iv, iv, ivlen);
    memcpy(ctx->oiv, iv, ivlen);
    return 1;
}

void ossl_cipher_generic_initkey(void *vctx, size_t kbits, size_t blkbits,
    size_t ivbits, unsigned int mode,
    uint64_t flags, const PROV_CIPHER_HW *hw,
    void *provctx)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;

    if ((flags & PROV_CIPHER_FLAG_INVERSE_CIPHER) != 0)
        ctx->inverse_cipher = 1;
    if ((flags & PROV_CIPHER_FLAG_VARIABLE_LENGTH) != 0)
        ctx->variable_keylength = 1;

    ctx->pad = 1;
    ctx->keylen = ((kbits) / 8);
    ctx->ivlen = ((ivbits) / 8);
    ctx->hw = hw;
    ctx->mode = mode;
    ctx->blocksize = blkbits / 8;
    if (provctx != NULL)
        ctx->libctx = PROV_LIBCTX_OF(provctx); /* used for rand */
}

Coverage Report

Created: 2025-12-10 06:24

Line	Count	Source
1		/*
2		* Copyright 2019-2025 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		/*
11		* Generic dispatch table functions for ciphers.
12		*/
13
14		/* For SSL3_VERSION */
15		#include <string.h>
16		#include <openssl/prov_ssl.h>
17		#include <openssl/proverr.h>
18		#include "ciphercommon_local.h"
19		#include "prov/provider_ctx.h"
20		#include "prov/providercommon.h"
21		#include "internal/skey.h"
22		#include "internal/e_os.h"
23		#include "crypto/types.h"
24
25		#define cipher_generic_get_ctx_params_st ossl_cipher_get_ctx_param_list_st
26		#define cipher_generic_set_ctx_params_st ossl_cipher_set_ctx_param_list_st
27		#define cipher_var_keylen_set_ctx_params_st ossl_cipher_set_ctx_param_list_st
28
29		#include "providers/implementations/ciphers/ciphercommon.inc"
30
31		/*-
32		* Generic cipher functions for OSSL_PARAM gettables and settables
33		*/
34
35		const OSSL_PARAM ossl_cipher_generic_gettable_params(ossl_unused void provctx)
36	0	{
37	0	return ossl_cipher_generic_get_params_list;
38	0	}
39
40		int ossl_cipher_generic_get_params(OSSL_PARAM params[], unsigned int md,
41		uint64_t flags,
42		size_t kbits, size_t blkbits, size_t ivbits)
43	158	{
44	158	struct ossl_cipher_generic_get_params_st p;
45
46	158	if (!ossl_cipher_generic_get_params_decoder(params, &p))
47	0	return 0;
48
49	158	if (p.mode != NULL && !OSSL_PARAM_set_uint(p.mode, md)) {
50	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
51	0	return 0;
52	0	}
53	158	if (p.aead != NULL
54	158	&& !OSSL_PARAM_set_int(p.aead, (flags & PROV_CIPHER_FLAG_AEAD) != 0)) {
55	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
56	0	return 0;
57	0	}
58	158	if (p.custiv != NULL
59	158	&& !OSSL_PARAM_set_int(p.custiv, (flags & PROV_CIPHER_FLAG_CUSTOM_IV) != 0)) {
60	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
61	0	return 0;
62	0	}
63	158	if (p.cts != NULL
64	158	&& !OSSL_PARAM_set_int(p.cts, (flags & PROV_CIPHER_FLAG_CTS) != 0)) {
65	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
66	0	return 0;
67	0	}
68	158	if (p.mb != NULL
69	158	&& !OSSL_PARAM_set_int(p.mb, (flags & PROV_CIPHER_FLAG_TLS1_MULTIBLOCK) != 0)) {
70	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
71	0	return 0;
72	0	}
73	158	if (p.rand != NULL
74	158	&& !OSSL_PARAM_set_int(p.rand, (flags & PROV_CIPHER_FLAG_RAND_KEY) != 0)) {
75	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
76	0	return 0;
77	0	}
78	158	if (p.etm != NULL
79	158	&& !OSSL_PARAM_set_int(p.etm, (flags & EVP_CIPH_FLAG_ENC_THEN_MAC) != 0)) {
80	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
81	0	return 0;
82	0	}
83	158	if (p.keylen != NULL && !OSSL_PARAM_set_size_t(p.keylen, kbits / 8)) {
84	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
85	0	return 0;
86	0	}
87	158	if (p.bsize != NULL && !OSSL_PARAM_set_size_t(p.bsize, blkbits / 8)) {
88	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
89	0	return 0;
90	0	}
91	158	if (p.ivlen != NULL && !OSSL_PARAM_set_size_t(p.ivlen, ivbits / 8)) {
92	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
93	0	return 0;
94	0	}
95	158	return 1;
96	158	}
97
98		const OSSL_PARAM ossl_cipher_generic_gettable_ctx_params(ossl_unused void cctx, ossl_unused void *provctx)
99	101	{
100	101	return cipher_generic_get_ctx_params_list;
101	101	}
102
103		const OSSL_PARAM ossl_cipher_generic_settable_ctx_params(ossl_unused void cctx, ossl_unused void *provctx)
104	0	{
105	0	return cipher_generic_set_ctx_params_list;
106	0	}
107
108		/*
109		* Variable key length cipher functions for OSSL_PARAM settables
110		*/
111
112		const OSSL_PARAM ossl_cipher_var_keylen_settable_ctx_params(ossl_unused void cctx, ossl_unused void *provctx)
113	0	{
114	0	return cipher_var_keylen_set_ctx_params_list;
115	0	}
116
117		int ossl_cipher_var_keylen_set_ctx_params(void *vctx, const OSSL_PARAM params[])
118	0	{
119	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
120	0	struct ossl_cipher_set_ctx_param_list_st p;
121
122	0	if (ctx == NULL
123	0	\|\| !cipher_var_keylen_set_ctx_params_decoder(params, &p)
124	0	\|\| !ossl_cipher_common_set_ctx_params(ctx, &p))
125	0	return 0;
126
127	0	if (p.keylen != NULL) {
128	0	size_t keylen;
129
130	0	if (!OSSL_PARAM_get_size_t(p.keylen, &keylen)) {
131	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
132	0	return 0;
133	0	}
134	0	if (ctx->keylen != keylen) {
135	0	ctx->keylen = keylen;
136	0	ctx->key_set = 0;
137	0	}
138	0	}
139	0	return 1;
140	0	}
141
142		void ossl_cipher_generic_reset_ctx(PROV_CIPHER_CTX *ctx)
143	68	{
144	68	if (ctx != NULL && ctx->alloced) {
145	0	OPENSSL_free(ctx->tlsmac);
146	0	ctx->alloced = 0;
147	0	ctx->tlsmac = NULL;
148	0	}
149	68	}
150
151		static int cipher_generic_init_internal(PROV_CIPHER_CTX *ctx,
152		const unsigned char *key, size_t keylen,
153		const unsigned char *iv, size_t ivlen,
154		const OSSL_PARAM params[], int enc)
155	0	{
156	0	ctx->num = 0;
157	0	ctx->bufsz = 0;
158	0	ctx->updated = 0;
159	0	ctx->enc = enc ? 1 : 0;
160
161	0	if (!ossl_prov_is_running())
162	0	return 0;
163
164	0	if (iv != NULL && ctx->mode != EVP_CIPH_ECB_MODE) {
165	0	if (!ossl_cipher_generic_initiv(ctx, iv, ivlen))
166	0	return 0;
167	0	}
168	0	if (iv == NULL && ctx->iv_set
169	0	&& (ctx->mode == EVP_CIPH_CBC_MODE
170	0	\|\| ctx->mode == EVP_CIPH_CFB_MODE
171	0	\|\| ctx->mode == EVP_CIPH_OFB_MODE))
172		/* reset IV for these modes to keep compatibility with 1.1.1 */
173	0	memcpy(ctx->iv, ctx->oiv, ctx->ivlen);
174
175	0	if (key != NULL) {
176	0	if (ctx->variable_keylength == 0) {
177	0	if (keylen != ctx->keylen) {
178	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
179	0	return 0;
180	0	}
181	0	} else {
182	0	ctx->keylen = keylen;
183	0	}
184	0	if (!ctx->hw->init(ctx, key, ctx->keylen))
185	0	return 0;
186	0	ctx->key_set = 1;
187	0	}
188	0	return ossl_cipher_generic_set_ctx_params(ctx, params);
189	0	}
190
191		int ossl_cipher_generic_einit(void vctx, const unsigned char key,
192		size_t keylen, const unsigned char *iv,
193		size_t ivlen, const OSSL_PARAM params[])
194	0	{
195	0	return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx, key, keylen,
196	0	iv, ivlen, params, 1);
197	0	}
198
199		int ossl_cipher_generic_dinit(void vctx, const unsigned char key,
200		size_t keylen, const unsigned char *iv,
201		size_t ivlen, const OSSL_PARAM params[])
202	0	{
203	0	return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx, key, keylen,
204	0	iv, ivlen, params, 0);
205	0	}
206
207		int ossl_cipher_generic_skey_einit(void vctx, void skeydata,
208		const unsigned char *iv, size_t ivlen,
209		const OSSL_PARAM params[])
210	0	{
211	0	PROV_SKEY *key = skeydata;
212
213	0	return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx,
214	0	key->data, key->length,
215	0	iv, ivlen, params, 1);
216	0	}
217
218		int ossl_cipher_generic_skey_dinit(void vctx, void skeydata,
219		const unsigned char *iv, size_t ivlen,
220		const OSSL_PARAM params[])
221	0	{
222	0	PROV_SKEY *key = skeydata;
223
224	0	return cipher_generic_init_internal((PROV_CIPHER_CTX *)vctx,
225	0	key->data, key->length,
226	0	iv, ivlen, params, 0);
227	0	}
228
229		/* Max padding including padding length byte */
230	0	#define MAX_PADDING 256
231
232		int ossl_cipher_generic_block_update(void vctx, unsigned char out,
233		size_t *outl, size_t outsize,
234		const unsigned char *in, size_t inl)
235	0	{
236	0	size_t outlint = 0;
237	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
238	0	size_t blksz = ctx->blocksize;
239	0	size_t nextblocks;
240
241	0	if (!ctx->key_set) {
242	0	ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
243	0	return 0;
244	0	}
245
246	0	if (ctx->tlsversion > 0) {
247		/*
248		* Each update call corresponds to a TLS record and is individually
249		* padded
250		*/
251
252		/* Sanity check inputs */
253	0	if (in == NULL
254	0	\|\| in != out
255	0	\|\| outsize < inl
256	0	\|\| !ctx->pad) {
257	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
258	0	return 0;
259	0	}
260
261	0	if (ctx->enc) {
262	0	unsigned char padval;
263	0	size_t padnum, loop;
264
265		/* Add padding */
266
267	0	padnum = blksz - (inl % blksz);
268
269	0	if (outsize < inl + padnum) {
270	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
271	0	return 0;
272	0	}
273
274	0	if (padnum > MAX_PADDING) {
275	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
276	0	return 0;
277	0	}
278	0	padval = (unsigned char)(padnum - 1);
279	0	if (ctx->tlsversion == SSL3_VERSION) {
280	0	if (padnum > 1)
281	0	memset(out + inl, 0, padnum - 1);
282	0	*(out + inl + padnum - 1) = padval;
283	0	} else {
284		/* we need to add 'padnum' padding bytes of value padval */
285	0	for (loop = inl; loop < inl + padnum; loop++)
286	0	out[loop] = padval;
287	0	}
288	0	inl += padnum;
289	0	}
290
291	0	if ((inl % blksz) != 0) {
292	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
293	0	return 0;
294	0	}
295
296		/* Shouldn't normally fail */
297	0	if (!ctx->hw->cipher(ctx, out, in, inl)) {
298	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
299	0	return 0;
300	0	}
301
302	0	if (ctx->alloced) {
303	0	OPENSSL_free(ctx->tlsmac);
304	0	ctx->alloced = 0;
305	0	ctx->tlsmac = NULL;
306	0	}
307
308		/* This only fails if padding is publicly invalid */
309	0	*outl = inl;
310	0	if (!ctx->enc
311	0	&& !ossl_cipher_tlsunpadblock(ctx->libctx, ctx->tlsversion,
312	0	out, outl,
313	0	blksz, &ctx->tlsmac, &ctx->alloced,
314	0	ctx->tlsmacsize, 0)) {
315	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
316	0	return 0;
317	0	}
318	0	return 1;
319	0	}
320
321	0	if (ctx->bufsz != 0)
322	0	nextblocks = ossl_cipher_fillblock(ctx->buf, &ctx->bufsz, blksz,
323	0	&in, &inl);
324	0	else
325	0	nextblocks = inl & ~(blksz - 1);
326
327		/*
328		* If we're decrypting and we end an update on a block boundary we hold
329		* the last block back in case this is the last update call and the last
330		* block is padded.
331		*/
332	0	if (ctx->bufsz == blksz && (ctx->enc \|\| inl > 0 \|\| !ctx->pad)) {
333	0	if (outsize < blksz) {
334	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
335	0	return 0;
336	0	}
337	0	if (!ctx->hw->cipher(ctx, out, ctx->buf, blksz)) {
338	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
339	0	return 0;
340	0	}
341	0	ctx->bufsz = 0;
342	0	outlint = blksz;
343	0	out += blksz;
344	0	}
345	0	if (nextblocks > 0) {
346	0	if (!ctx->enc && ctx->pad && nextblocks == inl) {
347	0	if (!ossl_assert(inl >= blksz)) {
348	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
349	0	return 0;
350	0	}
351	0	nextblocks -= blksz;
352	0	}
353	0	outlint += nextblocks;
354	0	if (outsize < outlint) {
355	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
356	0	return 0;
357	0	}
358	0	}
359	0	if (nextblocks > 0) {
360	0	if (!ctx->hw->cipher(ctx, out, in, nextblocks)) {
361	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
362	0	return 0;
363	0	}
364	0	in += nextblocks;
365	0	inl -= nextblocks;
366	0	}
367	0	if (inl != 0
368	0	&& !ossl_cipher_trailingdata(ctx->buf, &ctx->bufsz, blksz, &in, &inl)) {
369		/* ERR_raise already called */
370	0	return 0;
371	0	}
372
373	0	*outl = outlint;
374	0	return inl == 0;
375	0	}
376
377		int ossl_cipher_generic_block_final(void vctx, unsigned char out,
378		size_t *outl, size_t outsize)
379	0	{
380	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
381	0	size_t blksz = ctx->blocksize;
382
383	0	if (!ossl_prov_is_running())
384	0	return 0;
385
386	0	if (!ctx->key_set) {
387	0	ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
388	0	return 0;
389	0	}
390
391	0	if (ctx->tlsversion > 0) {
392		/* We never finalize TLS, so this is an error */
393	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
394	0	return 0;
395	0	}
396
397	0	if (ctx->enc) {
398	0	if (ctx->pad) {
399	0	ossl_cipher_padblock(ctx->buf, &ctx->bufsz, blksz);
400	0	} else if (ctx->bufsz == 0) {
401	0	*outl = 0;
402	0	return 1;
403	0	} else if (ctx->bufsz != blksz) {
404	0	ERR_raise(ERR_LIB_PROV, PROV_R_WRONG_FINAL_BLOCK_LENGTH);
405	0	return 0;
406	0	}
407
408	0	if (outsize < blksz) {
409	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
410	0	return 0;
411	0	}
412	0	if (!ctx->hw->cipher(ctx, out, ctx->buf, blksz)) {
413	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
414	0	return 0;
415	0	}
416	0	ctx->bufsz = 0;
417	0	*outl = blksz;
418	0	return 1;
419	0	}
420
421		/* Decrypting */
422	0	if (ctx->bufsz != blksz) {
423	0	if (ctx->bufsz == 0 && !ctx->pad) {
424	0	*outl = 0;
425	0	return 1;
426	0	}
427	0	ERR_raise(ERR_LIB_PROV, PROV_R_WRONG_FINAL_BLOCK_LENGTH);
428	0	return 0;
429	0	}
430
431	0	if (!ctx->hw->cipher(ctx, ctx->buf, ctx->buf, blksz)) {
432	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
433	0	return 0;
434	0	}
435
436	0	if (ctx->pad && !ossl_cipher_unpadblock(ctx->buf, &ctx->bufsz, blksz)) {
437		/* ERR_raise already called */
438	0	return 0;
439	0	}
440
441	0	if (outsize < ctx->bufsz) {
442	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
443	0	return 0;
444	0	}
445	0	memcpy(out, ctx->buf, ctx->bufsz);
446	0	*outl = ctx->bufsz;
447	0	ctx->bufsz = 0;
448	0	return 1;
449	0	}
450
451		int ossl_cipher_generic_stream_update(void vctx, unsigned char out,
452		size_t *outl, size_t outsize,
453		const unsigned char *in, size_t inl)
454	0	{
455	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
456
457	0	if (!ctx->key_set) {
458	0	ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
459	0	return 0;
460	0	}
461
462	0	if (inl == 0) {
463	0	*outl = 0;
464	0	return 1;
465	0	}
466
467	0	if (outsize < inl) {
468	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
469	0	return 0;
470	0	}
471
472	0	if (!ctx->hw->cipher(ctx, out, in, inl)) {
473	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
474	0	return 0;
475	0	}
476
477	0	*outl = inl;
478	0	if (!ctx->enc && ctx->tlsversion > 0) {
479		/*
480		* Remove any TLS padding. Only used by cipher_aes_cbc_hmac_sha1_hw.c and
481		* cipher_aes_cbc_hmac_sha256_hw.c
482		*/
483	0	if (ctx->removetlspad) {
484		/*
485		* We should have already failed in the cipher() call above if this
486		* isn't true.
487		*/
488	0	if (!ossl_assert(*outl >= (size_t)(out[inl - 1] + 1)))
489	0	return 0;
490		/* The actual padding length */
491	0	*outl -= out[inl - 1] + 1;
492	0	}
493
494		/* TLS MAC and explicit IV if relevant. We should have already failed
495		* in the cipher() call above if *outl is too short.
496		*/
497	0	if (!ossl_assert(*outl >= ctx->removetlsfixed))
498	0	return 0;
499	0	*outl -= ctx->removetlsfixed;
500
501		/* Extract the MAC if there is one */
502	0	if (ctx->tlsmacsize > 0) {
503	0	if (*outl < ctx->tlsmacsize)
504	0	return 0;
505
506	0	ctx->tlsmac = out + *outl - ctx->tlsmacsize;
507	0	*outl -= ctx->tlsmacsize;
508	0	}
509	0	}
510
511	0	return 1;
512	0	}
513		int ossl_cipher_generic_stream_final(void vctx, unsigned char out,
514		size_t *outl, size_t outsize)
515	0	{
516	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
517
518	0	if (!ossl_prov_is_running())
519	0	return 0;
520
521	0	if (!ctx->key_set) {
522	0	ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
523	0	return 0;
524	0	}
525
526	0	*outl = 0;
527	0	return 1;
528	0	}
529
530		int ossl_cipher_generic_cipher(void vctx, unsigned char out, size_t *outl,
531		size_t outsize, const unsigned char *in,
532		size_t inl)
533	0	{
534	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
535
536	0	if (!ossl_prov_is_running())
537	0	return 0;
538
539	0	if (!ctx->key_set) {
540	0	ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
541	0	return 0;
542	0	}
543
544	0	if (outsize < inl) {
545	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
546	0	return 0;
547	0	}
548
549	0	if (!ctx->hw->cipher(ctx, out, in, inl)) {
550	0	ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
551	0	return 0;
552	0	}
553
554	0	*outl = inl;
555	0	return 1;
556	0	}
557
558		int ossl_cipher_common_get_ctx_params(PROV_CIPHER_CTX ctx, const struct ossl_cipher_get_ctx_param_list_st p)
559	91	{
560	91	if (p->ivlen != NULL && !OSSL_PARAM_set_size_t(p->ivlen, ctx->ivlen)) {
561	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
562	0	return 0;
563	0	}
564
565	91	if (p->pad != NULL && !OSSL_PARAM_set_uint(p->pad, ctx->pad)) {
566	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
567	0	return 0;
568	0	}
569
570	91	if (p->iv != NULL
571	0	&& !OSSL_PARAM_set_octet_string_or_ptr(p->iv, ctx->oiv, ctx->ivlen)) {
572	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
573	0	return 0;
574	0	}
575
576	91	if (p->updiv != NULL
577	0	&& !OSSL_PARAM_set_octet_string_or_ptr(p->updiv, ctx->iv, ctx->ivlen)) {
578	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
579	0	return 0;
580	0	}
581
582	91	if (p->num != NULL && !OSSL_PARAM_set_uint(p->num, ctx->num)) {
583	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
584	0	return 0;
585	0	}
586
587	91	if (p->keylen != NULL && !OSSL_PARAM_set_size_t(p->keylen, ctx->keylen)) {
588	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
589	0	return 0;
590	0	}
591
592	91	if (p->tlsmac != NULL
593	0	&& !OSSL_PARAM_set_octet_ptr(p->tlsmac, ctx->tlsmac, ctx->tlsmacsize)) {
594	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
595	0	return 0;
596	0	}
597	91	return 1;
598	91	}
599
600		int ossl_cipher_generic_get_ctx_params(void *vctx, OSSL_PARAM params[])
601	91	{
602	91	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
603	91	struct ossl_cipher_get_ctx_param_list_st p;
604
605	91	if (ctx == NULL \|\| !cipher_generic_get_ctx_params_decoder(params, &p))
606	0	return 0;
607	91	return ossl_cipher_common_get_ctx_params(ctx, &p);
608	91	}
609
610		int ossl_cipher_common_set_ctx_params(PROV_CIPHER_CTX ctx, const struct ossl_cipher_set_ctx_param_list_st p)
611	0	{
612	0	if (p->pad != NULL) {
613	0	unsigned int pad;
614
615	0	if (!OSSL_PARAM_get_uint(p->pad, &pad)) {
616	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
617	0	return 0;
618	0	}
619	0	ctx->pad = pad ? 1 : 0;
620	0	}
621
622	0	if (p->bits != NULL) {
623	0	unsigned int bits;
624
625	0	if (!OSSL_PARAM_get_uint(p->bits, &bits)) {
626	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
627	0	return 0;
628	0	}
629	0	ctx->use_bits = bits ? 1 : 0;
630	0	}
631
632	0	if (p->tlsvers != NULL) {
633	0	if (!OSSL_PARAM_get_uint(p->tlsvers, &ctx->tlsversion)) {
634	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
635	0	return 0;
636	0	}
637	0	}
638
639	0	if (p->tlsmacsize != NULL) {
640	0	if (!OSSL_PARAM_get_size_t(p->tlsmacsize, &ctx->tlsmacsize)) {
641	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
642	0	return 0;
643	0	}
644	0	}
645
646	0	if (p->num != NULL) {
647	0	unsigned int num;
648
649	0	if (!OSSL_PARAM_get_uint(p->num, &num)) {
650	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
651	0	return 0;
652	0	}
653	0	ctx->num = num;
654	0	}
655	0	return 1;
656	0	}
657
658		int ossl_cipher_generic_set_ctx_params(void *vctx, const OSSL_PARAM params[])
659	0	{
660	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
661	0	struct ossl_cipher_set_ctx_param_list_st p;
662
663	0	if (ossl_param_is_empty(params))
664	0	return 1;
665
666	0	if (ctx == NULL \|\| !cipher_generic_set_ctx_params_decoder(params, &p))
667	0	return 0;
668	0	return ossl_cipher_common_set_ctx_params(ctx, &p);
669	0	}
670
671		int ossl_cipher_generic_initiv(PROV_CIPHER_CTX ctx, const unsigned char iv,
672		size_t ivlen)
673	23	{
674	23	if (ivlen != ctx->ivlen
675	23	\|\| ivlen > sizeof(ctx->iv)) {
676	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
677	0	return 0;
678	0	}
679	23	ctx->iv_set = 1;
680	23	memcpy(ctx->iv, iv, ivlen);
681	23	memcpy(ctx->oiv, iv, ivlen);
682	23	return 1;
683	23	}
684
685		void ossl_cipher_generic_initkey(void *vctx, size_t kbits, size_t blkbits,
686		size_t ivbits, unsigned int mode,
687		uint64_t flags, const PROV_CIPHER_HW *hw,
688		void *provctx)
689	68	{
690	68	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
691
692	68	if ((flags & PROV_CIPHER_FLAG_INVERSE_CIPHER) != 0)
693	0	ctx->inverse_cipher = 1;
694	68	if ((flags & PROV_CIPHER_FLAG_VARIABLE_LENGTH) != 0)
695	0	ctx->variable_keylength = 1;
696
697	68	ctx->pad = 1;
698	68	ctx->keylen = ((kbits) / 8);
699	68	ctx->ivlen = ((ivbits) / 8);
700	68	ctx->hw = hw;
701	68	ctx->mode = mode;
702	68	ctx->blocksize = blkbits / 8;
703	68	if (provctx != NULL)
704	0	ctx->libctx = PROV_LIBCTX_OF(provctx); /* used for rand */
705	68	}