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| author | Vadim Bendebury <vbendeb@chromium.org> | 2015-05-20 10:32:25 -0700 |
|---|---|---|
| committer | Vadim Bendebury <vbendeb@chromium.org> | 2015-05-20 22:32:05 -0700 |
| commit | 5679752bf24c21135884e987c4077e2f71848971 (patch) | |
| tree | 3e680dd91a7af84c45ea1170ee88225bd4ad32c8 /ECDH_ZGen.c | |
| download | tpm2-5679752bf24c21135884e987c4077e2f71848971.tar.gz | |
Initial commit to seed TPM2.0 source code directory
LICENSE file text copied from TCG library specification. README
describes the procedure used to extract source code from parts 3 and 4
of the specification.
The python scripts and part{34}.txt files will be removed in the
following commits.
Change-Id: Ie281e6e988481831f33483053455e8aff8f3f75f
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Diffstat (limited to 'ECDH_ZGen.c')
| -rw-r--r-- | ECDH_ZGen.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/ECDH_ZGen.c b/ECDH_ZGen.c new file mode 100644 index 0000000..37d95fa --- /dev/null +++ b/ECDH_ZGen.c @@ -0,0 +1,63 @@ +// This file was extracted from the TCG Published +// Trusted Platform Module Library +// Part 3: Commands +// Family "2.0" +// Level 00 Revision 01.16 +// October 30, 2014 + +#include "InternalRoutines.h" +#include "ECDH_ZGen_fp.h" +#ifdef TPM_ALG_ECC +// +// +// Error Returns Meaning +// +// TPM_RC_ATTRIBUTES key referenced by keyA is restricted or not a decrypt key +// TPM_RC_KEY key referenced by keyA is not an ECC key +// TPM_RC_NO_RESULT multiplying inPoint resulted in a point at infinity +// TPM_RC_SCHEME the scheme of the key referenced by keyA is not TPM_ALG_NULL, +// TPM_ALG_ECDH, +// +TPM_RC +TPM2_ECDH_ZGen( + ECDH_ZGen_In *in, // IN: input parameter list + ECDH_ZGen_Out *out // OUT: output parameter list + ) +{ + TPM_RC result; + OBJECT *eccKey; + +// Input Validation + + eccKey = ObjectGet(in->keyHandle); + + // Input key must be a non-restricted, decrypt ECC key + if( eccKey->publicArea.type != TPM_ALG_ECC) + return TPM_RCS_KEY + RC_ECDH_ZGen_keyHandle; + + if( eccKey->publicArea.objectAttributes.restricted == SET + || eccKey->publicArea.objectAttributes.decrypt != SET + ) + return TPM_RC_KEY + RC_ECDH_ZGen_keyHandle; + + // Make sure the scheme allows this use + if( eccKey->publicArea.parameters.eccDetail.scheme.scheme != TPM_ALG_ECDH + && eccKey->publicArea.parameters.eccDetail.scheme.scheme != TPM_ALG_NULL) + return TPM_RC_SCHEME + RC_ECDH_ZGen_keyHandle; + +// Command Output + + // Compute Z. TPM_RC_ECC_POINT or TPM_RC_NO_RESULT may be returned here. + result = CryptEccPointMultiply(&out->outPoint.t.point, + eccKey->publicArea.parameters.eccDetail.curveID, + &eccKey->sensitive.sensitive.ecc, + &in->inPoint.t.point); + if(result != TPM_RC_SUCCESS) + return RcSafeAddToResult(result, RC_ECDH_ZGen_inPoint); + + out->outPoint.t.size = TPMS_ECC_POINT_Marshal(&out->outPoint.t.point, + NULL, NULL); + + return TPM_RC_SUCCESS; +} +#endif |