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CMS_get0_SignerInfos(3ssl) - phpMan

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CMS_get0_SignerInfos(3SSL)                   OpenSSL                   CMS_get0_SignerInfos(3SSL)



NAME
        CMS_get0_SignerInfos, CMS_SignerInfo_get0_signer_id, CMS_SignerInfo_cert_cmp, CMS_set1_signer_certs - CMS signedData signer functions.

SYNOPSIS
        #include <openssl/cms.h>

        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);
        int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert);
        void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer);

DESCRIPTION
       The function CMS_get0_SignerInfos() returns all the CMS_SignerInfo structures associated
       with a CMS signedData structure.

       CMS_SignerInfo_get0_signer_id() retrieves the certificate signer identifier associated
       with a specific CMS_SignerInfo structure si. Either the keyidentifier will be set in keyid
       or both issuer name and serial number in issuer and sno.

       CMS_SignerInfo_cert_cmp() compares the certificate cert against the signer identifier si.
       It returns zero if the comparison is successful and non zero if not.

       CMS_SignerInfo_set1_signer_cert() sets the signers certificate of si to signer.

NOTES
       The main purpose of these functions is to enable an application to lookup signers
       certificates using any appropriate technique when the simpler method of CMS_verify() is
       not appropriate.

       In typical usage and application will retrieve all CMS_SignerInfo structures using
       CMS_get0_SignerInfo() and retrieve the identifier information using CMS. It will then
       obtain the signer certificate by some unspecified means (or return and error if it cannot
       be found) and set it using CMS_SignerInfo_set1_signer_cert().

       Once all signer certificates have been set CMS_verify() can be used.

       Although CMS_get0_SignerInfos() can return NULL is an error occur or if there are no
       signers this is not a problem in practice because the only error which can occur is if the
       cms structure is not of type signedData due to application error.

RETURN VALUES
       CMS_get0_SignerInfos() returns all CMS_SignerInfo structures, or NULL there are no signers
       or an error occurs.

       CMS_SignerInfo_get0_signer_id() returns 1 for success and 0 for failure.

       CMS_SignerInfo_cert_cmp() returns 0 for a successful comparison and non zero otherwise.

       CMS_SignerInfo_set1_signer_cert() does not return a value.

       Any error can be obtained from ERR_get_error(3)

SEE ALSO
       ERR_get_error(3), CMS_verify(3)

HISTORY
       These functions were first was added to OpenSSL 0.9.8



1.0.1t                                      2016-05-03                 CMS_get0_SignerInfos(3SSL)


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