diff options
Diffstat (limited to 'secure/lib/libcrypto/man/EVP_SealInit.3')
| -rw-r--r-- | secure/lib/libcrypto/man/EVP_SealInit.3 | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/secure/lib/libcrypto/man/EVP_SealInit.3 b/secure/lib/libcrypto/man/EVP_SealInit.3 index 9ba48bc..2c35dc0 100644 --- a/secure/lib/libcrypto/man/EVP_SealInit.3 +++ b/secure/lib/libcrypto/man/EVP_SealInit.3 @@ -1,5 +1,5 @@ .\" Automatically generated by Pod::Man version 1.15 -.\" Mon Feb 3 10:01:51 2003 +.\" Wed Feb 19 16:42:54 2003 .\" .\" Standard preamble: .\" ====================================================================== @@ -138,7 +138,7 @@ .\" ====================================================================== .\" .IX Title "EVP_SealInit 3" -.TH EVP_SealInit 3 "0.9.7" "2003-02-03" "OpenSSL" +.TH EVP_SealInit 3 "0.9.7a" "2003-02-19" "OpenSSL" .UC .SH "NAME" EVP_SealInit, EVP_SealUpdate, EVP_SealFinal \- \s-1EVP\s0 envelope encryption @@ -158,22 +158,28 @@ EVP_SealInit, EVP_SealUpdate, EVP_SealFinal \- \s-1EVP\s0 envelope encryption .SH "DESCRIPTION" .IX Header "DESCRIPTION" The \s-1EVP\s0 envelope routines are a high level interface to envelope -encryption. They generate a random key and then \*(L"envelope\*(R" it by -using public key encryption. Data can then be encrypted using this -key. +encryption. They generate a random key and \s-1IV\s0 (if required) then +\&\*(L"envelope\*(R" it by using public key encryption. Data can then be +encrypted using this key. .PP \&\fIEVP_SealInit()\fR initializes a cipher context \fBctx\fR for encryption -with cipher \fBtype\fR using a random secret key and \s-1IV\s0 supplied in -the \fBiv\fR parameter. \fBtype\fR is normally supplied by a function such -as \fIEVP_des_cbc()\fR. The secret key is encrypted using one or more public -keys, this allows the same encrypted data to be decrypted using any -of the corresponding private keys. \fBek\fR is an array of buffers where -the public key encrypted secret key will be written, each buffer must -contain enough room for the corresponding encrypted key: that is +with cipher \fBtype\fR using a random secret key and \s-1IV\s0. \fBtype\fR is normally +supplied by a function such as \fIEVP_des_cbc()\fR. The secret key is encrypted +using one or more public keys, this allows the same encrypted data to be +decrypted using any of the corresponding private keys. \fBek\fR is an array of +buffers where the public key encrypted secret key will be written, each buffer +must contain enough room for the corresponding encrypted key: that is \&\fBek[i]\fR must have room for \fBEVP_PKEY_size(pubk[i])\fR bytes. The actual size of each encrypted secret key is written to the array \fBekl\fR. \fBpubk\fR is an array of \fBnpubk\fR public keys. .PP +The \fBiv\fR parameter is a buffer where the generated \s-1IV\s0 is written to. It must +contain enough room for the corresponding cipher's \s-1IV\s0, as determined by (for +example) EVP_CIPHER_iv_length(type). +.PP +If the cipher does not require an \s-1IV\s0 then the \fBiv\fR parameter is ignored +and can be \fB\s-1NULL\s0\fR. +.PP \&\fIEVP_SealUpdate()\fR and \fIEVP_SealFinal()\fR have exactly the same properties as the \fIEVP_EncryptUpdate()\fR and \fIEVP_EncryptFinal()\fR routines, as documented on the EVP_EncryptInit(3) manual |
