Coverage Report

Created: 2025-10-28 06:56

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/openssl/crypto/rsa/rsa_asn1.c
Line
Count
Source
1
/*
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 * Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
3
 *
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 * Licensed under the Apache License 2.0 (the "License").  You may not use
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 * this file except in compliance with the License.  You can obtain a copy
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 * in the file LICENSE in the source distribution or at
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 * https://www.openssl.org/source/license.html
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 */
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10
/*
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 * RSA low level APIs are deprecated for public use, but still ok for
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 * internal use.
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 */
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#include "internal/deprecated.h"
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/bn.h>
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#include <openssl/x509.h>
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#include <openssl/asn1t.h>
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#include "rsa_local.h"
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/*
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 * Override the default free and new methods,
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 * and calculate helper products for multi-prime
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 * RSA keys.
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 */
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static int rsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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                  void *exarg)
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193k
{
31
193k
    if (operation == ASN1_OP_NEW_PRE) {
32
58.7k
        *pval = (ASN1_VALUE *)RSA_new();
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58.7k
        if (*pval != NULL)
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58.7k
            return 2;
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0
        return 0;
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135k
    } else if (operation == ASN1_OP_FREE_PRE) {
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10.3k
        RSA_free((RSA *)*pval);
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10.3k
        *pval = NULL;
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10.3k
        return 2;
40
124k
    } else if (operation == ASN1_OP_D2I_POST) {
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48.4k
        if (((RSA *)*pval)->version != RSA_ASN1_VERSION_MULTI) {
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            /* not a multi-prime key, skip */
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48.4k
            return 1;
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48.4k
        }
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0
        return (ossl_rsa_multip_calc_product((RSA *)*pval) == 1) ? 2 : 0;
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48.4k
    }
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76.3k
    return 1;
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193k
}
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/* Based on definitions in RFC 8017 appendix A.1.2 */
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ASN1_SEQUENCE(RSA_PRIME_INFO) = {
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        ASN1_SIMPLE(RSA_PRIME_INFO, r, CBIGNUM),
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        ASN1_SIMPLE(RSA_PRIME_INFO, d, CBIGNUM),
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        ASN1_SIMPLE(RSA_PRIME_INFO, t, CBIGNUM),
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0
} ASN1_SEQUENCE_END(RSA_PRIME_INFO)
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0
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0
ASN1_SEQUENCE_cb(RSAPrivateKey, rsa_cb) = {
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0
        ASN1_EMBED(RSA, version, INT32),
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0
        ASN1_SIMPLE(RSA, n, BIGNUM),
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0
        ASN1_SIMPLE(RSA, e, BIGNUM),
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0
        ASN1_SIMPLE(RSA, d, CBIGNUM),
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0
        ASN1_SIMPLE(RSA, p, CBIGNUM),
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0
        ASN1_SIMPLE(RSA, q, CBIGNUM),
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0
        ASN1_SIMPLE(RSA, dmp1, CBIGNUM),
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0
        ASN1_SIMPLE(RSA, dmq1, CBIGNUM),
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0
        ASN1_SIMPLE(RSA, iqmp, CBIGNUM),
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0
        ASN1_SEQUENCE_OF_OPT(RSA, prime_infos, RSA_PRIME_INFO)
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0
} ASN1_SEQUENCE_END_cb(RSA, RSAPrivateKey)
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0
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0
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0
ASN1_SEQUENCE_cb(RSAPublicKey, rsa_cb) = {
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0
        ASN1_SIMPLE(RSA, n, BIGNUM),
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0
        ASN1_SIMPLE(RSA, e, BIGNUM),
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0
} ASN1_SEQUENCE_END_cb(RSA, RSAPublicKey)
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0
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0
/* Free up maskHash */
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0
static int rsa_pss_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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0
                      void *exarg)
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0
{
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0
    if (operation == ASN1_OP_FREE_PRE) {
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0
        RSA_PSS_PARAMS *pss = (RSA_PSS_PARAMS *)*pval;
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0
        X509_ALGOR_free(pss->maskHash);
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0
    }
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0
    return 1;
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0
}
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ASN1_SEQUENCE_cb(RSA_PSS_PARAMS, rsa_pss_cb) = {
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        ASN1_EXP_OPT(RSA_PSS_PARAMS, hashAlgorithm, X509_ALGOR,0),
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        ASN1_EXP_OPT(RSA_PSS_PARAMS, maskGenAlgorithm, X509_ALGOR,1),
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        ASN1_EXP_OPT(RSA_PSS_PARAMS, saltLength, ASN1_INTEGER,2),
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        ASN1_EXP_OPT(RSA_PSS_PARAMS, trailerField, ASN1_INTEGER,3)
92
} ASN1_SEQUENCE_END_cb(RSA_PSS_PARAMS, RSA_PSS_PARAMS)
93
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IMPLEMENT_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
95
IMPLEMENT_ASN1_DUP_FUNCTION(RSA_PSS_PARAMS)
96
97
/* Free up maskHash */
98
static int rsa_oaep_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
99
                       void *exarg)
100
0
{
101
0
    if (operation == ASN1_OP_FREE_PRE) {
102
0
        RSA_OAEP_PARAMS *oaep = (RSA_OAEP_PARAMS *)*pval;
103
0
        X509_ALGOR_free(oaep->maskHash);
104
0
    }
105
0
    return 1;
106
0
}
107
108
ASN1_SEQUENCE_cb(RSA_OAEP_PARAMS, rsa_oaep_cb) = {
109
        ASN1_EXP_OPT(RSA_OAEP_PARAMS, hashFunc, X509_ALGOR, 0),
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        ASN1_EXP_OPT(RSA_OAEP_PARAMS, maskGenFunc, X509_ALGOR, 1),
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        ASN1_EXP_OPT(RSA_OAEP_PARAMS, pSourceFunc, X509_ALGOR, 2),
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} ASN1_SEQUENCE_END_cb(RSA_OAEP_PARAMS, RSA_OAEP_PARAMS)
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IMPLEMENT_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
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IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(RSA, RSAPrivateKey, RSAPrivateKey)
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118
IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(RSA, RSAPublicKey, RSAPublicKey)
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120
RSA *RSAPublicKey_dup(const RSA *rsa)
121
0
{
122
0
    return ASN1_item_dup(ASN1_ITEM_rptr(RSAPublicKey), rsa);
123
0
}
124
125
RSA *RSAPrivateKey_dup(const RSA *rsa)
126
0
{
127
0
    return ASN1_item_dup(ASN1_ITEM_rptr(RSAPrivateKey), rsa);
128
0
}