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Diffstat (limited to 'doc/crypto/EVP_OpenInit.pod')
-rw-r--r-- | doc/crypto/EVP_OpenInit.pod | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/doc/crypto/EVP_OpenInit.pod b/doc/crypto/EVP_OpenInit.pod deleted file mode 100644 index 2e710da..0000000 --- a/doc/crypto/EVP_OpenInit.pod +++ /dev/null @@ -1,63 +0,0 @@ -=pod - -=head1 NAME - -EVP_OpenInit, EVP_OpenUpdate, EVP_OpenFinal - EVP envelope decryption - -=head1 SYNOPSIS - - #include <openssl/evp.h> - - int EVP_OpenInit(EVP_CIPHER_CTX *ctx,EVP_CIPHER *type,unsigned char *ek, - int ekl,unsigned char *iv,EVP_PKEY *priv); - int EVP_OpenUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, - int *outl, unsigned char *in, int inl); - int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, - int *outl); - -=head1 DESCRIPTION - -The EVP envelope routines are a high level interface to envelope -decryption. They decrypt a public key encrypted symmetric key and -then decrypt data using it. - -EVP_OpenInit() initializes a cipher context B<ctx> for decryption -with cipher B<type>. It decrypts the encrypted symmetric key of length -B<ekl> bytes passed in the B<ek> parameter using the private key B<priv>. -The IV is supplied in the B<iv> parameter. - -EVP_OpenUpdate() and EVP_OpenFinal() have exactly the same properties -as the EVP_DecryptUpdate() and EVP_DecryptFinal() routines, as -documented on the L<EVP_EncryptInit(3)|EVP_EncryptInit(3)> manual -page. - -=head1 NOTES - -It is possible to call EVP_OpenInit() twice in the same way as -EVP_DecryptInit(). The first call should have B<priv> set to NULL -and (after setting any cipher parameters) it should be called again -with B<type> set to NULL. - -If the cipher passed in the B<type> parameter is a variable length -cipher then the key length will be set to the value of the recovered -key length. If the cipher is a fixed length cipher then the recovered -key length must match the fixed cipher length. - -=head1 RETURN VALUES - -EVP_OpenInit() returns 0 on error or a non zero integer (actually the -recovered secret key size) if successful. - -EVP_OpenUpdate() returns 1 for success or 0 for failure. - -EVP_OpenFinal() returns 0 if the decrypt failed or 1 for success. - -=head1 SEE ALSO - -L<evp(3)|evp(3)>, L<rand(3)|rand(3)>, -L<EVP_EncryptInit(3)|EVP_EncryptInit(3)>, -L<EVP_SealInit(3)|EVP_SealInit(3)> - -=head1 HISTORY - -=cut |