/src/tpm2-tss/src/tss2-sys/api/Tss2_Sys_MAC.c
Line | Count | Source |
1 | | /* SPDX-License-Identifier: BSD-2-Clause */ |
2 | | /***********************************************************************; |
3 | | * Copyright (c) 2015 - 2017, Intel Corporation |
4 | | * All rights reserved. |
5 | | ***********************************************************************/ |
6 | | |
7 | | #ifdef HAVE_CONFIG_H |
8 | | #include "config.h" // IWYU pragma: keep |
9 | | #endif |
10 | | |
11 | | #include "sysapi_util.h" // for _TSS2_SYS_CONTEXT_BLOB, syscontext_cast |
12 | | #include "tss2_common.h" // for TSS2_RC, TSS2_SYS_RC_BAD_REFERENCE, TSS... |
13 | | #include "tss2_mu.h" // for Tss2_MU_UINT16_Marshal, Tss2_MU_TPM2B_D... |
14 | | #include "tss2_sys.h" // for TSS2_SYS_CONTEXT, TSS2L_SYS_AUTH_COMMAND |
15 | | #include "tss2_tpm2_types.h" // for TPM2B_DIGEST, TPM2B_MAX_BUFFER, TPMI_AL... |
16 | | |
17 | | TSS2_RC |
18 | | Tss2_Sys_MAC_Prepare(TSS2_SYS_CONTEXT *sysContext, |
19 | | TPMI_DH_OBJECT handle, |
20 | | const TPM2B_MAX_BUFFER *buffer, |
21 | 0 | TPMI_ALG_MAC_SCHEME inScheme) { |
22 | 0 | TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext); |
23 | 0 | TSS2_RC rval; |
24 | |
|
25 | 0 | if (!ctx) |
26 | 0 | return TSS2_SYS_RC_BAD_REFERENCE; |
27 | | |
28 | 0 | if (IsAlgorithmWeak(hashAlg, 0)) |
29 | 0 | return TSS2_SYS_RC_BAD_VALUE; |
30 | | |
31 | 0 | rval = CommonPreparePrologue(ctx, TPM2_CC_MAC); |
32 | 0 | if (rval) |
33 | 0 | return rval; |
34 | | |
35 | 0 | rval = Tss2_MU_UINT32_Marshal(handle, ctx->cmdBuffer, ctx->maxCmdSize, &ctx->nextData); |
36 | 0 | if (rval) |
37 | 0 | return rval; |
38 | | |
39 | 0 | if (!buffer) { |
40 | 0 | ctx->decryptNull = 1; |
41 | |
|
42 | 0 | rval = Tss2_MU_UINT16_Marshal(0, ctx->cmdBuffer, ctx->maxCmdSize, &ctx->nextData); |
43 | 0 | } else { |
44 | |
|
45 | 0 | rval = Tss2_MU_TPM2B_MAX_BUFFER_Marshal(buffer, ctx->cmdBuffer, ctx->maxCmdSize, |
46 | 0 | &ctx->nextData); |
47 | 0 | } |
48 | |
|
49 | 0 | if (rval) |
50 | 0 | return rval; |
51 | | |
52 | 0 | rval = Tss2_MU_UINT16_Marshal(inScheme, ctx->cmdBuffer, ctx->maxCmdSize, &ctx->nextData); |
53 | 0 | if (rval) |
54 | 0 | return rval; |
55 | | |
56 | 0 | ctx->decryptAllowed = 1; |
57 | 0 | ctx->encryptAllowed = 1; |
58 | 0 | ctx->authAllowed = 1; |
59 | |
|
60 | 0 | return CommonPrepareEpilogue(ctx); |
61 | 0 | } |
62 | | |
63 | | TSS2_RC |
64 | 0 | Tss2_Sys_MAC_Complete(TSS2_SYS_CONTEXT *sysContext, TPM2B_DIGEST *outMAC) { |
65 | 0 | TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext); |
66 | 0 | TSS2_RC rval; |
67 | |
|
68 | 0 | if (!ctx) |
69 | 0 | return TSS2_SYS_RC_BAD_REFERENCE; |
70 | | |
71 | 0 | rval = CommonComplete(ctx); |
72 | 0 | if (rval) |
73 | 0 | return rval; |
74 | | |
75 | 0 | return Tss2_MU_TPM2B_DIGEST_Unmarshal(ctx->cmdBuffer, ctx->maxCmdSize, &ctx->nextData, outMAC); |
76 | 0 | } |
77 | | |
78 | | TSS2_RC |
79 | | Tss2_Sys_MAC(TSS2_SYS_CONTEXT *sysContext, |
80 | | TPMI_DH_OBJECT handle, |
81 | | const TSS2L_SYS_AUTH_COMMAND *cmdAuths, |
82 | | const TPM2B_MAX_BUFFER *buffer, |
83 | | TPMI_ALG_MAC_SCHEME inScheme, |
84 | | TPM2B_DIGEST *outMAC, |
85 | 0 | TSS2L_SYS_AUTH_RESPONSE *rspAuths) { |
86 | 0 | TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext); |
87 | 0 | TSS2_RC rval; |
88 | |
|
89 | 0 | rval = Tss2_Sys_MAC_Prepare(sysContext, handle, buffer, inScheme); |
90 | 0 | if (rval) |
91 | 0 | return rval; |
92 | | |
93 | 0 | rval = CommonOneCall(ctx, cmdAuths, rspAuths); |
94 | 0 | if (rval) |
95 | 0 | return rval; |
96 | | |
97 | 0 | return Tss2_Sys_MAC_Complete(sysContext, outMAC); |
98 | 0 | } |