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X509_digest.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" X509_digest, X509_CRL_digest, X509_pubkey_digest, X509_NAME_digest, X509_REQ_digest, PKCS7_ISSUER_AND_SERIAL_digest \&\- get digest of various objects .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/x509.h> \& \& int X509_digest(const X509 *data, const EVP_MD *type, unsigned char *md, \& unsigned int *len); \& \& int X509_CRL_digest(const X509_CRL *data, const EVP_MD *type, unsigned char *md, \& unsigned int *len); \& \& int X509_pubkey_digest(const X509 *data, const EVP_MD *type, \& unsigned char *md, unsigned int *len); \& \& int X509_REQ_digest(const X509_REQ *data, const EVP_MD *type, \& unsigned char *md, unsigned int *len); \& \& int X509_NAME_digest(const X509_NAME *data, const EVP_MD *type, \& unsigned char *md, unsigned int *len); \& \& #include <openssl/pkcs7.h> \& \& int PKCS7_ISSUER_AND_SERIAL_digest(PKCS7_ISSUER_AND_SERIAL *data, \& const EVP_MD *type, unsigned char *md, \& unsigned int *len); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBX509_pubkey_digest()\fR returns a digest of the \s-1DER\s0 representation of the public key in the specified X509 \fBdata\fR object. All other functions described here return a digest of the \s-1DER\s0 representation of their entire \fBdata\fR objects. .PP The \fBtype\fR parameter specifies the digest to be used, such as \fBEVP_sha1()\fR. The \fBmd\fR is a pointer to the buffer where the digest will be copied and is assumed to be large enough; the constant \&\fB\s-1EVP_MAX_MD_SIZE\s0\fR is suggested. The \fBlen\fR parameter, if not \s-1NULL,\s0 points to a place where the digest size will be stored. .SH "RETURN VALUES" .IX Header "RETURN VALUES" All functions described here return 1 for success and 0 for failure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBEVP_sha1\fR\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2017\-2018 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
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