- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUES
- CONFORMING TO
- SEE ALSO
- COPYRIGHT

# NAME

EVP_PKEY_CTX_set_paillier_keygen_bits, EVP_PKEY_CTX_get_paillier_keygen_bits - Paillier EVP_PKEY ctrls

# SYNOPSIS

     #include <openssl/paillier.h>

     int EVP_PKEY_CTX_set_paillier_keygen_bits(EVP_PKEY_CTX *ctx, int nbits);
     int EVP_PKEY_CTX_get_paillier_keygen_bits(EVP_PKEY_CTX *ctx);

# DESCRIPTION

Applications should use the higher level functions EVP_DigestInit(3) etc. instead of calling the hash functions directly.

SM3 (ShangMi#3 Hash Algorithm) is a cryptographic hash function with a 256 bit output.

sm3() computes the SM3 message digest of the n bytes at d and places it in md (which must have space for SHA_DIGEST_LENGTH == 20 bytes of output). If md is NULL, the digest is placed in a static array. Note: setting md to NULL is not thread safe.

The following functions may be used if the message is not completely stored in memory:

sm3_nit() initializes a sm3_ctx_t structure.

sm3_update() can be called repeatedly with chunks of the message to be hashed (len bytes at data).

sm3_final() places the message digest in md, which must have space for SM3_DIGEST_LENGTH == 32 bytes of output, and erases the sm3_ctx_t.

# RETURN VALUES

sm3_init(), sm3_update(), sm3_final(), sm3_compress() and sm3() return void.

# CONFORMING TO

GM/T 0004-2012 SM3 Cryptogrpahic Hash Algorithm.

# SEE ALSO

EVP_DigestInit(3)

# COPYRIGHT

Copyright 2014-2019 The GmSSL Project. All Rights Reserved.

Licensed under the GmSSL 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 http://gmssl.org/license.html.