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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
commit | fc22b3d6507c6745911b9dfcc68f1e665ae13dbc (patch) | |
tree | ce1e3bce06471410239a6f41282e328770aa404a /upstream/debian-unstable/man3/EVP_PKEY_decrypt.3ssl | |
parent | Initial commit. (diff) | |
download | manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.tar.xz manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.zip |
Adding upstream version 4.22.0.upstream/4.22.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'upstream/debian-unstable/man3/EVP_PKEY_decrypt.3ssl')
-rw-r--r-- | upstream/debian-unstable/man3/EVP_PKEY_decrypt.3ssl | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/upstream/debian-unstable/man3/EVP_PKEY_decrypt.3ssl b/upstream/debian-unstable/man3/EVP_PKEY_decrypt.3ssl new file mode 100644 index 00000000..0a91316d --- /dev/null +++ b/upstream/debian-unstable/man3/EVP_PKEY_decrypt.3ssl @@ -0,0 +1,168 @@ +.\" -*- mode: troff; coding: utf-8 -*- +.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>. +.ie n \{\ +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds C` +. ds C' +'br\} +.\" +.\" Escape single quotes in literal strings from groff's Unicode transform. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" +.\" If the F register is >0, we'll generate index entries on stderr for +.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index +.\" entries marked with X<> in POD. Of course, you'll have to process the +.\" output yourself in some meaningful fashion. +.\" +.\" Avoid warning from groff about undefined register 'F'. +.de IX +.. +.nr rF 0 +.if \n(.g .if rF .nr rF 1 +.if (\n(rF:(\n(.g==0)) \{\ +. if \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. if !\nF==2 \{\ +. nr % 0 +. nr F 2 +. \} +. \} +.\} +.rr rF +.\" ======================================================================== +.\" +.IX Title "EVP_PKEY_DECRYPT 3SSL" +.TH EVP_PKEY_DECRYPT 3SSL 2024-02-03 3.1.5 OpenSSL +.\" For nroff, turn off justification. Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH NAME +EVP_PKEY_decrypt_init, EVP_PKEY_decrypt_init_ex, +EVP_PKEY_decrypt \- decrypt using a public key algorithm +.SH SYNOPSIS +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/evp.h> +\& +\& int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx); +\& int EVP_PKEY_decrypt_init_ex(EVP_PKEY_CTX *ctx, const OSSL_PARAM params[]); +\& int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, +\& unsigned char *out, size_t *outlen, +\& const unsigned char *in, size_t inlen); +.Ve +.SH DESCRIPTION +.IX Header "DESCRIPTION" +The \fBEVP_PKEY_decrypt_init()\fR function initializes a public key algorithm +context using key \fIpkey\fR for a decryption operation. +.PP +The \fBEVP_PKEY_decrypt_init_ex()\fR function initializes a public key algorithm +context using key \fIpkey\fR for a decryption operation and sets the +algorithm specific \fIparams\fR. +.PP +The \fBEVP_PKEY_decrypt()\fR function performs a public key decryption operation +using \fIctx\fR. The data to be decrypted is specified using the \fIin\fR and +\&\fIinlen\fR parameters. If \fIout\fR is NULL then the minimum required size of +the output buffer is written to the \fI*outlen\fR parameter. +.PP +If \fIout\fR is not NULL then before the call the \fI*outlen\fR parameter must +contain the length of the \fIout\fR buffer. If the call is successful the +decrypted data is written to \fIout\fR and the amount of the decrypted data +written to \fI*outlen\fR, otherwise an error is returned. +.SH NOTES +.IX Header "NOTES" +After the call to \fBEVP_PKEY_decrypt_init()\fR algorithm specific control +operations can be performed to set any appropriate parameters for the +operation. These operations can be included in the \fBEVP_PKEY_decrypt_init_ex()\fR +call. +.PP +The function \fBEVP_PKEY_decrypt()\fR can be called more than once on the same +context if several operations are performed using the same parameters. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fBEVP_PKEY_decrypt_init()\fR, \fBEVP_PKEY_decrypt_init_ex()\fR and \fBEVP_PKEY_decrypt()\fR +return 1 for success and 0 or a negative value for failure. In particular a +return value of \-2 indicates the operation is not supported by the public key +algorithm. +.SH EXAMPLES +.IX Header "EXAMPLES" +Decrypt data using OAEP (for RSA keys): +.PP +.Vb 2 +\& #include <openssl/evp.h> +\& #include <openssl/rsa.h> +\& +\& EVP_PKEY_CTX *ctx; +\& ENGINE *eng; +\& unsigned char *out, *in; +\& size_t outlen, inlen; +\& EVP_PKEY *key; +\& +\& /* +\& * NB: assumes key, eng, in, inlen are already set up +\& * and that key is an RSA private key +\& */ +\& ctx = EVP_PKEY_CTX_new(key, eng); +\& if (!ctx) +\& /* Error occurred */ +\& if (EVP_PKEY_decrypt_init(ctx) <= 0) +\& /* Error */ +\& if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_OAEP_PADDING) <= 0) +\& /* Error */ +\& +\& /* Determine buffer length */ +\& if (EVP_PKEY_decrypt(ctx, NULL, &outlen, in, inlen) <= 0) +\& /* Error */ +\& +\& out = OPENSSL_malloc(outlen); +\& +\& if (!out) +\& /* malloc failure */ +\& +\& if (EVP_PKEY_decrypt(ctx, out, &outlen, in, inlen) <= 0) +\& /* Error */ +\& +\& /* Decrypted data is outlen bytes written to buffer out */ +.Ve +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBEVP_PKEY_CTX_new\fR\|(3), +\&\fBEVP_PKEY_encrypt\fR\|(3), +\&\fBEVP_PKEY_sign\fR\|(3), +\&\fBEVP_PKEY_verify\fR\|(3), +\&\fBEVP_PKEY_verify_recover\fR\|(3), +\&\fBEVP_PKEY_derive\fR\|(3) +.SH HISTORY +.IX Header "HISTORY" +These functions were added in OpenSSL 1.0.0. +.SH COPYRIGHT +.IX Header "COPYRIGHT" +Copyright 2006\-2022 The OpenSSL Project Authors. All Rights Reserved. +.PP +Licensed under the Apache License 2.0 (the "License"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file LICENSE in the source distribution or at +<https://www.openssl.org/source/license.html>. |