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>
9 #endif
10
11 #include "tss2_tpm2_types.h"
12 #include "tss2_mu.h"
13 #include "sysapi_util.h"
14
Tss2_Sys_ECDH_ZGen_Prepare(TSS2_SYS_CONTEXT * sysContext,TPMI_DH_OBJECT keyHandle,const TPM2B_ECC_POINT * inPoint)15 TSS2_RC Tss2_Sys_ECDH_ZGen_Prepare(
16 TSS2_SYS_CONTEXT *sysContext,
17 TPMI_DH_OBJECT keyHandle,
18 const TPM2B_ECC_POINT *inPoint)
19 {
20 _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
21 TSS2_RC rval;
22
23 if (!ctx)
24 return TSS2_SYS_RC_BAD_REFERENCE;
25
26 rval = CommonPreparePrologue(ctx, TPM2_CC_ECDH_ZGen);
27 if (rval)
28 return rval;
29
30 rval = Tss2_MU_UINT32_Marshal(keyHandle, ctx->cmdBuffer,
31 ctx->maxCmdSize,
32 &ctx->nextData);
33 if (rval)
34 return rval;
35
36 if (!inPoint) {
37 rval = Tss2_MU_UINT16_Marshal(0, ctx->cmdBuffer,
38 ctx->maxCmdSize,
39 &ctx->nextData);
40
41 } else {
42
43 rval = Tss2_MU_TPM2B_ECC_POINT_Marshal(inPoint, ctx->cmdBuffer,
44 ctx->maxCmdSize,
45 &ctx->nextData);
46 }
47
48 if (rval)
49 return rval;
50
51 ctx->decryptAllowed = 1;
52 ctx->encryptAllowed = 1;
53 ctx->authAllowed = 1;
54
55 return CommonPrepareEpilogue(ctx);
56 }
57
Tss2_Sys_ECDH_ZGen_Complete(TSS2_SYS_CONTEXT * sysContext,TPM2B_ECC_POINT * outPoint)58 TSS2_RC Tss2_Sys_ECDH_ZGen_Complete(
59 TSS2_SYS_CONTEXT *sysContext,
60 TPM2B_ECC_POINT *outPoint)
61 {
62 _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
63 TSS2_RC rval;
64
65 if (!ctx)
66 return TSS2_SYS_RC_BAD_REFERENCE;
67
68 rval = CommonComplete(ctx);
69 if (rval)
70 return rval;
71
72 return Tss2_MU_TPM2B_ECC_POINT_Unmarshal(ctx->cmdBuffer,
73 ctx->maxCmdSize,
74 &ctx->nextData,
75 outPoint);
76 }
77
Tss2_Sys_ECDH_ZGen(TSS2_SYS_CONTEXT * sysContext,TPMI_DH_OBJECT keyHandle,TSS2L_SYS_AUTH_COMMAND const * cmdAuthsArray,const TPM2B_ECC_POINT * inPoint,TPM2B_ECC_POINT * outPoint,TSS2L_SYS_AUTH_RESPONSE * rspAuthsArray)78 TSS2_RC Tss2_Sys_ECDH_ZGen(
79 TSS2_SYS_CONTEXT *sysContext,
80 TPMI_DH_OBJECT keyHandle,
81 TSS2L_SYS_AUTH_COMMAND const *cmdAuthsArray,
82 const TPM2B_ECC_POINT *inPoint,
83 TPM2B_ECC_POINT *outPoint,
84 TSS2L_SYS_AUTH_RESPONSE *rspAuthsArray)
85 {
86 _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
87 TSS2_RC rval;
88
89 rval = Tss2_Sys_ECDH_ZGen_Prepare(sysContext, keyHandle, inPoint);
90 if (rval)
91 return rval;
92
93 rval = CommonOneCall(ctx, cmdAuthsArray, rspAuthsArray);
94 if (rval)
95 return rval;
96
97 return Tss2_Sys_ECDH_ZGen_Complete(sysContext, outPoint);
98 }
99