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Added method to encode PKCS7 data type messages.

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This commit is contained in:
John Safranek
2014-01-13 10:58:01 -08:00
parent 3a984990c2
commit ef9cfc2172
2 changed files with 95 additions and 2 deletions
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61
ctaocrypt/src/pkcs7.c
View File

@@ -55,7 +55,7 @@ CYASSL_LOCAL int SetContentType(int pkcs7TypeOID, byte* output)
byte ID_Length[MAX_LENGTH_SZ];
switch (pkcs7TypeOID) {
case PKCS7:
case PKCS7_MSG:
typeSz = sizeof(pkcs7);
typeName = pkcs7;
break;
@@ -122,6 +122,65 @@ int Pkcs7_encrypt(const byte* certs, word32 certSz, byte* data, word32 dataSz,
return 0;
}
int PKCS7_InitWithCert(PKCS7* pkcs7, byte* cert, word32 certSz)
{
XMEMSET(pkcs7, 0, sizeof(PKCS7));
pkcs7->singleCert = cert;
pkcs7->singleCertSz = certSz;
return 0;
}
int PKCS7_EncodeData(PKCS7* pkcs7, byte* output, word32 outputSz)
{
static const byte oid[] =
{ ASN_OBJECT_ID, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01,
0x07, 0x01 };
byte seq[MAX_SEQ_SZ];
byte octetStr[MAX_OCTET_STR_SZ];
word32 seqSz;
word32 octetStrSz;
int idx = 0;
octetStrSz = SetOctetString(pkcs7->contentSz, octetStr);
seqSz = SetSequence(pkcs7->contentSz + octetStrSz + sizeof(oid), seq);
if (outputSz < pkcs7->contentSz + octetStrSz + sizeof(oid) + seqSz)
return BUFFER_E;
XMEMCPY(output, seq, seqSz);
idx += seqSz;
XMEMCPY(output + idx, oid, sizeof(oid));
idx += sizeof(oid);
XMEMCPY(output + idx, octetStr, octetStrSz);
idx += octetStrSz;
XMEMCPY(output + idx, pkcs7->content, pkcs7->contentSz);
idx += pkcs7->contentSz;
return idx;
}
int PKCS7_EncodeSignedData(PKCS7* pkcs7, byte* output, word32 outputSz)
{
(void)pkcs7;
(void)output;
(void)outputSz;
return 0;
}
int PKCS7_EncodeEnvelopeData(PKCS7* pkcs7, byte* output, word32 outputSz)
{
(void)pkcs7;
(void)output;
(void)outputSz;
return 0;
}
#else /* HAVE_PKCS7 */

36
cyassl/ctaocrypt/pkcs7.h
View File

@@ -36,7 +36,7 @@
#endif
enum PKCS7_TYPES {
PKCS7 = 650, /* 1.2.840.113549.1.7 */
PKCS7_MSG = 650, /* 1.2.840.113549.1.7 */
DATA = 651, /* 1.2.840.113549.1.7.1 */
SIGNED_DATA = 652, /* 1.2.840.113549.1.7.2 */
ENVELOPED_DATA = 653, /* 1.2.840.113549.1.7.3 */
@@ -53,6 +53,33 @@ enum Pkcs7_Misc {
MAX_SEQ_SZ + MAX_ALGO_SZ + 1 + MAX_ENCRYPTED_KEY_SZ
};
typedef struct PKCS7Attrib {
byte* oid;
word32 oidSz;
byte* value;
word32 valueSz;
} PKCS7Attrib;
typedef struct PKCS7 {
byte* content;
word32 contentSz;
int contentOID;
int hashOID;
int encryptOID;
byte* singleCert;
word32 singleCertSz;
byte* issuer;
word32 issuerSz;
PKCS7Attrib** signedAttribs;
word32 signedAttribsSz; /* Number of attribs in list */
} PKCS7;
CYASSL_API int Pkcs7_encrypt(const byte* certs, word32 certSz, byte* data,
word32 dataSz, int cipher, byte* out,
word32* outSz, word32 flags);
@@ -64,6 +91,13 @@ CYASSL_LOCAL int CreateRecipientInfo(const byte* cert, word32 certSz,
byte* contentKeyEnc,
int* keyEncSz, byte* out, word32 outSz);
CYASSL_API int PKCS7_InitWithCert(PKCS7* pkcs7, byte* cert, word32 certSz);
CYASSL_API int PKCS7_EncodeData(PKCS7* pkcs7, byte* output, word32 outputSz);
CYASSL_API int PKCS7_EncodeSignedData(PKCS7* pkcs7,
byte* output, word32 outputSz);
CYASSL_API int PKCS7_EncodeEnvelopeData(PKCS7* pkcs7,
byte* output, word32 outputSz);
#ifdef __cplusplus
} /* extern "C" */
#endif