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_EC_Ephemeral_Prepare(TSS2_SYS_CONTEXT * sysContext,TPMI_ECC_CURVE curveID)15 TSS2_RC Tss2_Sys_EC_Ephemeral_Prepare(
16 TSS2_SYS_CONTEXT *sysContext,
17 TPMI_ECC_CURVE curveID)
18 {
19 _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
20 TSS2_RC rval;
21
22 if (!ctx)
23 return TSS2_SYS_RC_BAD_REFERENCE;
24
25 rval = CommonPreparePrologue(ctx, TPM2_CC_EC_Ephemeral);
26 if (rval)
27 return rval;
28
29 rval = Tss2_MU_UINT16_Marshal(curveID, ctx->cmdBuffer,
30 ctx->maxCmdSize,
31 &ctx->nextData);
32 if (rval)
33 return rval;
34
35 ctx->decryptAllowed = 0;
36 ctx->encryptAllowed = 1;
37 ctx->authAllowed = 1;
38
39 return CommonPrepareEpilogue(ctx);
40 }
41
Tss2_Sys_EC_Ephemeral_Complete(TSS2_SYS_CONTEXT * sysContext,TPM2B_ECC_POINT * Q,UINT16 * counter)42 TSS2_RC Tss2_Sys_EC_Ephemeral_Complete(
43 TSS2_SYS_CONTEXT *sysContext,
44 TPM2B_ECC_POINT *Q,
45 UINT16 *counter)
46 {
47 _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
48 TSS2_RC rval;
49
50 if (!ctx)
51 return TSS2_SYS_RC_BAD_REFERENCE;
52
53 rval = CommonComplete(ctx);
54 if (rval)
55 return rval;
56 rval = Tss2_MU_TPM2B_ECC_POINT_Unmarshal(ctx->cmdBuffer,
57 ctx->maxCmdSize,
58 &ctx->nextData, Q);
59 if (rval)
60 return rval;
61
62 return Tss2_MU_UINT16_Unmarshal(ctx->cmdBuffer,
63 ctx->maxCmdSize,
64 &ctx->nextData, counter);
65 }
66
Tss2_Sys_EC_Ephemeral(TSS2_SYS_CONTEXT * sysContext,TSS2L_SYS_AUTH_COMMAND const * cmdAuthsArray,TPMI_ECC_CURVE curveID,TPM2B_ECC_POINT * Q,UINT16 * counter,TSS2L_SYS_AUTH_RESPONSE * rspAuthsArray)67 TSS2_RC Tss2_Sys_EC_Ephemeral(
68 TSS2_SYS_CONTEXT *sysContext,
69 TSS2L_SYS_AUTH_COMMAND const *cmdAuthsArray,
70 TPMI_ECC_CURVE curveID,
71 TPM2B_ECC_POINT *Q,
72 UINT16 *counter,
73 TSS2L_SYS_AUTH_RESPONSE *rspAuthsArray)
74 {
75 _TSS2_SYS_CONTEXT_BLOB *ctx = syscontext_cast(sysContext);
76 TSS2_RC rval;
77
78 rval = Tss2_Sys_EC_Ephemeral_Prepare(sysContext, curveID);
79 if (rval)
80 return rval;
81
82 rval = CommonOneCall(ctx, cmdAuthsArray, rspAuthsArray);
83 if (rval)
84 return rval;
85
86 return Tss2_Sys_EC_Ephemeral_Complete(sysContext, Q, counter);
87 }
88