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Add CMS_SignerInfo_get0_signature function.

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Add function to retrieve the signature from a CMS_SignerInfo structure:
applications can then read or modify it.
(cherry picked from commit e8df6cec4c09b9a94c4c07abcf0402d31ec82cc1)
This commit is contained in:
Dr. Stephen Henson 2013-11-07 03:55:49 +00:00
parent c76d6922b1
commit 233069f8db
3 changed files with 13 additions and 1 deletions
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1
crypto/cms/cms.h
View file

@ -275,6 +275,7 @@ int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *certs,
unsigned int flags);
void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, X509 **signer,
X509_ALGOR **pdig, X509_ALGOR **psig);
ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si);
int CMS_SignerInfo_sign(CMS_SignerInfo *si);
int CMS_SignerInfo_verify(CMS_SignerInfo *si);
int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain);

5
crypto/cms/cms_sd.c
View file

@ -616,6 +616,11 @@ void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, X509 **signer,
*psig = si->signatureAlgorithm;
}
ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si)
{
return si->signature;
}
static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms,
CMS_SignerInfo *si, BIO *chain)
{

8
doc/crypto/CMS_get0_SignerInfos.pod
View file

@ -2,7 +2,7 @@
=head1 NAME
CMS_get0_SignerInfos, CMS_SignerInfo_get0_signer_id, CMS_SignerInfo_cert_cmp, CMS_set1_signer_certs - CMS signedData signer functions.
CMS_get0_SignerInfos, CMS_SignerInfo_get0_signer_id, CMS_SignerInfo_get0_signature, CMS_SignerInfo_cert_cmp, CMS_set1_signer_cert - CMS signedData signer functions.
=head1 SYNOPSIS
@ -11,6 +11,7 @@
STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms);
int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si, ASN1_OCTET_STRING **keyid, X509_NAME **issuer, ASN1_INTEGER **sno);
ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si);
int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert);
void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer);
@ -24,6 +25,11 @@ associated with a specific CMS_SignerInfo structure B<si>. Either the
keyidentifier will be set in B<keyid> or B<both> issuer name and serial number
in B<issuer> and B<sno>.
CMS_SignerInfo_get0_signature() retrieves the signature associated with
B<si> in a pointer to an ASN1_OCTET_STRING structure. This pointer returned
corresponds to the internal signature value if B<si> so it may be read or
modified.
CMS_SignerInfo_cert_cmp() compares the certificate B<cert> against the signer
identifier B<si>. It returns zero if the comparison is successful and non zero
if not.