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NAMEEVP_OpenInit, EVP_OpenUpdate, EVP_OpenFinal - EVP envelope decryption
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);
DESCRIPTIONThe 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.
NOTESIt is possible to call If the cipher passed in the 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.
RETURN VALUES
SEE ALSOevp(7), RAND_bytes(3), EVP_EncryptInit(3), EVP_SealInit(3)
COPYRIGHTCopyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (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. |
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