| #include <stdlib.h> |
| #include <memory.h> |
| |
| #include "cose.h" |
| #include "cose_int.h" |
| #include "configure.h" |
| #include "crypto.h" |
| |
| extern bool IsValidSignHandle(HCOSE_SIGN h); |
| |
| bool IsValidSignerHandle(HCOSE_SIGNER h) |
| { |
| if (h == NULL) return false; |
| return true; |
| } |
| |
| void _COSE_Signer_Free(COSE_SignerInfo * pSigner) |
| { |
| COSE_FREE(pSigner, &pSigner->m_message.m_allocContext); |
| |
| return; |
| } |
| |
| |
| HCOSE_SIGNER COSE_Sign_GetSigner(HCOSE_SIGN cose, int iSigner, cose_errback * perr) |
| { |
| int i; |
| COSE_SignerInfo * p; |
| |
| if (!IsValidSignHandle(cose)) { |
| if (perr != NULL) perr->err = COSE_ERR_INVALID_PARAMETER; |
| return NULL; |
| } |
| |
| p = ((COSE_SignMessage *)cose)->m_signerFirst; |
| for (i = 0; i < iSigner; i++) { |
| if (p == NULL) { |
| if (perr != NULL) perr->err = COSE_ERR_INVALID_PARAMETER; |
| return NULL; |
| } |
| p = p->m_signerNext; |
| } |
| return (HCOSE_SIGNER)p; |
| } |
| |
| COSE_SignerInfo * _COSE_SignerInfo_Init_From_Object(cn_cbor * cbor, CBOR_CONTEXT_COMMA cose_errback * perr) |
| { |
| COSE_SignerInfo * pSigner = NULL; |
| |
| pSigner = (COSE_SignerInfo *)COSE_CALLOC(1, sizeof(COSE_SignerInfo), context); |
| if (pSigner == NULL) { |
| if (perr != NULL) perr->err = COSE_ERR_OUT_OF_MEMORY; |
| return NULL; |
| } |
| |
| if (cbor->type != CN_CBOR_MAP) { |
| if (perr != NULL) perr->err = COSE_ERR_INVALID_PARAMETER; |
| COSE_FREE(pSigner, context); |
| return NULL; |
| } |
| if (!_COSE_Init_From_Object(&pSigner->m_message, cbor, CBOR_CONTEXT_PARAM_COMMA perr)) { |
| _COSE_Signer_Free(pSigner); |
| return NULL; |
| } |
| |
| return pSigner; |
| } |
| |
| byte RgbDontUse4[1024]; |
| |
| bool _COSE_Signer_sign(COSE_SignerInfo * pSigner, const cn_cbor * pcborBody, const cn_cbor * pcborProtected, cose_errback * perr) |
| { |
| #ifdef USE_CBOR_CONTEXT |
| cn_cbor_context * context = &pSigner->m_message.m_allocContext; |
| #endif |
| cn_cbor * pcborBody2 = NULL; |
| cn_cbor * pcborProtected2 = NULL; |
| cn_cbor * pcborProtectedSign = NULL; |
| cn_cbor * pcborProtectedSign2 = NULL; |
| cn_cbor * pArray = NULL; |
| size_t cbToSign; |
| byte * pbToSign = NULL; |
| bool f; |
| |
| pArray = cn_cbor_array_create(context, NULL); |
| if (pArray == NULL) { |
| if (perr != NULL) perr->err = COSE_ERR_OUT_OF_MEMORY; |
| errorReturn: |
| if (pcborBody2 != NULL) CN_CBOR_FREE(pcborBody2, context); |
| if (pcborProtected2 != NULL) CN_CBOR_FREE(pcborProtected2, context); |
| if (pArray != NULL) COSE_FREE(pArray, context); |
| if (pbToSign != NULL) COSE_FREE(pbToSign, context); |
| return false; |
| } |
| |
| pcborProtectedSign = _COSE_encode_protected(&pSigner->m_message, perr); |
| if (pcborProtectedSign == NULL) goto errorReturn; |
| |
| pcborBody2 = cn_cbor_data_create(pcborBody->v.bytes, pcborBody->length, CBOR_CONTEXT_PARAM_COMMA NULL); |
| CHECK_CONDITION(pcborBody2 != NULL, COSE_ERR_OUT_OF_MEMORY); |
| |
| pcborProtected2 = cn_cbor_data_create(pcborProtected->v.bytes, pcborProtected->length, CBOR_CONTEXT_PARAM_COMMA NULL); |
| CHECK_CONDITION(pcborProtected2 != NULL, COSE_ERR_OUT_OF_MEMORY); |
| |
| pcborProtectedSign2 = cn_cbor_data_create(pcborProtectedSign->v.bytes, pcborProtectedSign->length, CBOR_CONTEXT_PARAM_COMMA NULL); |
| CHECK_CONDITION(pcborProtectedSign2 != NULL, COSE_ERR_OUT_OF_MEMORY); |
| |
| CHECK_CONDITION(cn_cbor_array_append(pArray, pcborProtected2, NULL), COSE_ERR_CBOR); |
| CHECK_CONDITION(cn_cbor_array_append(pArray, pcborProtectedSign2, NULL), COSE_ERR_CBOR); |
| CHECK_CONDITION(cn_cbor_array_append(pArray, cn_cbor_data_create(NULL, 0, CBOR_CONTEXT_PARAM_COMMA NULL), NULL), COSE_ERR_CBOR); |
| CHECK_CONDITION(cn_cbor_array_append(pArray, pcborBody2, NULL), COSE_ERR_CBOR); |
| |
| cbToSign = cn_cbor_encoder_write(RgbDontUse4, 0, sizeof(RgbDontUse4), pArray); |
| CHECK_CONDITION(cbToSign > 0, COSE_ERR_CBOR); |
| pbToSign = (byte *)COSE_CALLOC(cbToSign, 1, context); |
| CHECK_CONDITION(pbToSign != NULL, COSE_ERR_OUT_OF_MEMORY); |
| CHECK_CONDITION(cn_cbor_encoder_write(pbToSign, 0, cbToSign, pArray), COSE_ERR_CBOR); |
| |
| f = ECDSA_Sign(pSigner, pbToSign, cbToSign, perr); |
| |
| COSE_FREE(pbToSign, context); |
| CN_CBOR_FREE(pArray, context); |
| |
| return f; |
| } |