Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 1 | // This file was extracted from the TCG Published |
| 2 | // Trusted Platform Module Library |
| 3 | // Part 3: Commands |
| 4 | // Family "2.0" |
| 5 | // Level 00 Revision 01.16 |
| 6 | // October 30, 2014 |
| 7 | |
| 8 | #include "InternalRoutines.h" |
| 9 | #include "EC_Ephemeral_fp.h" |
| 10 | #ifdef TPM_ALG_ECC |
| 11 | // |
| 12 | // |
| 13 | // Error Returns Meaning |
| 14 | // |
| 15 | // none ... |
| 16 | // |
| 17 | TPM_RC |
| 18 | TPM2_EC_Ephemeral( |
| 19 | EC_Ephemeral_In *in, // IN: input parameter list |
| 20 | EC_Ephemeral_Out *out // OUT: output parameter list |
| 21 | ) |
| 22 | { |
| 23 | TPM2B_ECC_PARAMETER r; |
| 24 | |
| 25 | // Get the random value that will be used in the point multiplications |
| 26 | // Note: this does not commit the count. |
| 27 | if(!CryptGenerateR(&r, |
| 28 | NULL, |
| 29 | in->curveID, |
| 30 | NULL)) |
| 31 | return TPM_RC_NO_RESULT; |
| 32 | |
| 33 | CryptEccPointMultiply(&out->Q.t.point, in->curveID, &r, NULL); |
| 34 | |
| 35 | // commit the count value |
| 36 | out->counter = CryptCommit(); |
| 37 | |
| 38 | return TPM_RC_SUCCESS; |
| 39 | } |
| 40 | #endif |