85 lines
2.5 KiB
Groff
85 lines
2.5 KiB
Groff
.\" $OpenBSD: X509_signature_dump.3,v 1.2 2021/12/18 17:47:45 schwarze Exp $
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.\"
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.\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd $Mdocdate: December 18 2021 $
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.Dt X509_SIGNATURE_DUMP 3
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.Os
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.Sh NAME
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.Nm X509_signature_dump ,
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.Nm X509_signature_print
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.Nd pretty-print ASN.1 strings
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.Sh SYNOPSIS
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.In openssl/x509.h
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.Ft int
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.Fo X509_signature_dump
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.Fa "BIO *bio"
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.Fa "const ASN1_STRING *signature"
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.Fa "int indent"
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.Fc
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.Ft int
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.Fo X509_signature_print
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.Fa "BIO *bio"
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.Fa "const X509_ALGOR *algorithm"
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.Fa "const ASN1_STRING *signature"
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.Fc
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.Sh DESCRIPTION
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.Fn X509_signature_dump
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writes the data bytes contained in the
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.Fa signature
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to
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.Fa bio
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in hexadecimal format with colons between bytes,
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18 bytes per output line, each line indented with
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.Fa indent
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space characters.
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.Pp
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.Fn X509_signature_print
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writes the name of the signature
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.Fa algorithm ,
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or, if no name for it is known, its object identifier (OID) to
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.Fa bio
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using
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.Xr i2a_ASN1_OBJECT 3 .
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After that, if a method object for the algorithm can be retrieved with
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.Xr EVP_PKEY_asn1_find 3
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and if that object defines a printing method, that printing method is
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used to print the
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.Fa signature .
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Otherwise, unless the
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.Fa signature
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is
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.Dv NULL ,
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it is printed using
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.Fn X509_signature_dump .
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.Sh RETURN VALUES
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These functions return 1 on success or 0 on failure.
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They fail and return as soon as any write operation fails.
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.Sh SEE ALSO
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.Xr ASN1_STRING_new 3 ,
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.Xr ASN1_STRING_print_ex 3 ,
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.Xr BIO_new 3 ,
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.Xr EVP_PKEY_asn1_new 3 ,
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.Xr OBJ_find_sigid_algs 3 ,
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.Xr X509_ALGOR_new 3 ,
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.Xr X509_get0_signature 3
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.Sh HISTORY
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.Fn X509_signature_print
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first appeared in OpenSSL 0.9.7 and has been available since
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.Ox 3.2 .
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.Pp
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.Fn X509_signature_dump
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first appeared in OpenSSL 1.0.1 and has been available since
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.Ox 5.3 .
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