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Fix wolfSSL_EVP_PKEY_print_public

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TakayukiMatsuo
2021-02-23 07:57:45 +09:00
parent e25284c690
commit a7cca8a99b
3 changed files with 73 additions and 10 deletions
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71
wolfcrypt/src/evp.c
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@@ -6935,21 +6935,84 @@ static int DumpElement(WOLFSSL_BIO* out, const byte* input,
static int PrintPubKeyRSA(WOLFSSL_BIO* out, const byte* pkey, int pkeySz,
int indent, int bitlen, ASN1_PCTX* pctx)
{
int res;
byte buff[128] = { 0 };
word32 inOutIdx = 0;
int length = 0;
word32 nSz = 0; /* size of modulus */
word32 eSz = 0; /* size of public exponent */
byte* n = NULL;
byte* e = NULL; /* pointer to modulus/exponent */
word32 localIdx;
word32 oid;
byte tag;
(void)pctx;
if ((res = wc_RsaPublicKeyDecode_ex(pkey, &inOutIdx, pkeySz,
(const byte**)&n, &nSz, (const byte**)&e, &eSz)) != 0) {
if (GetSequence(pkey, &inOutIdx, &length, pkeySz) < 0)
return WOLFSSL_FAILURE;
localIdx = inOutIdx;
if (GetASNTag(pkey, &localIdx, &tag, pkeySz) < 0)
return WOLFSSL_FAILURE;
if (tag != ASN_INTEGER) {
/* not from decoded cert, will have algo id, skip past */
if (GetSequence(pkey, &inOutIdx, &length, pkeySz) < 0)
return WOLFSSL_FAILURE;
if (GetObjectId(pkey, &inOutIdx, &oid, oidIgnoreType, pkeySz) != 0)
return WOLFSSL_FAILURE;
/* Option NULL ASN.1 tag */
if (inOutIdx >= (word32)pkeySz)
return WOLFSSL_FAILURE;
localIdx = inOutIdx;
if (GetASNTag(pkey, &inOutIdx, &tag, pkeySz) < 0)
return WOLFSSL_FAILURE;
if (tag != ASN_TAG_NULL)
return WOLFSSL_FAILURE;
inOutIdx ++;
/* should have bit tag length and seq next */
if( CheckBitString(pkey, &inOutIdx, NULL, pkeySz, 1, NULL) != 0)
return WOLFSSL_FAILURE;
if (GetSequence(pkey, &inOutIdx, &length, pkeySz) < 0)
return WOLFSSL_FAILURE;
}
/* Get modulus */
if (GetASNTag(pkey, &inOutIdx, &tag, pkeySz ) < 0)
return WOLFSSL_FAILURE;
if (tag != ASN_INTEGER)
return WOLFSSL_FAILURE;
if (GetLength(pkey, &inOutIdx, &length, pkeySz) < 0)
return WOLFSSL_FAILURE;
nSz = length;
n = (byte*)(&pkey[inOutIdx]);
inOutIdx += length;
/* Get exponent */
if (GetASNTag(pkey, &inOutIdx, &tag, pkeySz) < 0)
return WOLFSSL_FAILURE;
if (tag != ASN_INTEGER)
return WOLFSSL_FAILURE;
if (GetLength(pkey, &inOutIdx, &length, pkeySz) < 0)
return WOLFSSL_FAILURE;
eSz = length;
e = (byte*)(&pkey[inOutIdx]);
/* print out public key elements */
int idx = 0;
int wsz = 0;