openssl.c File Reference

OpenSSL-based hashing helpers used by crypto-related opcodes. More...

#include <openssl/evp.h>
#include <stdlib.h>

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Functions
int	EVP_MD_get_size (const EVP_MD *md)
static char *	fun_openssl_md5_hex (const unsigned char *data, size_t len)
	Compute MD5 digest and return it as a lowercase hex string.
static char *	fun_openssl_sha256_hex (const unsigned char *data, size_t len)
	Compute SHA-256 digest and return it as a lowercase hex string.
static char *	fun_openssl_sha512_hex (const unsigned char *data, size_t len)
	Compute SHA-512 digest and return it as a lowercase hex string.
static char *	fun_openssl_ripemd160_hex (const unsigned char *data, size_t len)
	Compute RIPEMD-160 digest and return it as a lowercase hex string.

Detailed Description

OpenSSL-based hashing helpers used by crypto-related opcodes.

Provides thin wrappers around OpenSSL EVP routines to compute common digests (MD5, RIPEMD-160, SHA-256, SHA-512). When FUN_WITH_OPENSSL is disabled, these helpers fall back to returning empty strings to keep the VM behavior consistent.

Definition in file openssl.c.

Function Documentation

EVP_MD_get_size()

int EVP_MD_get_size

(

const EVP_MD *

md

)

fun_openssl_md5_hex()

char * fun_openssl_md5_hex ( const unsigned char * data, size_t len )

static

Compute MD5 digest and return it as a lowercase hex string.

Parameters

data	Pointer to input bytes (may be NULL if len==0).
len	Number of input bytes.

Returns

Newly-allocated NUL-terminated hex string on success; NULL on failure. When FUN_WITH_OPENSSL is disabled, returns an allocated empty string to keep behavior consistent.

Note

The caller owns the returned buffer and must free() it.

Definition at line 44 of file openssl.c.

fun_openssl_ripemd160_hex()

char * fun_openssl_ripemd160_hex ( const unsigned char * data, size_t len )

static

Compute RIPEMD-160 digest and return it as a lowercase hex string.

On some OpenSSL builds (e.g., 3.x without legacy provider), RIPEMD-160 may be unavailable and EVP_ripemd160() can return NULL.

Parameters

data	Pointer to input bytes (may be NULL if len==0).
len	Number of input bytes.

Returns

Newly-allocated hex string on success; NULL if the digest is unavailable or another error occurs. When FUN_WITH_OPENSSL is disabled, returns an allocated empty string.

Note

The caller must free() the returned buffer.

Definition at line 196 of file openssl.c.

fun_openssl_sha256_hex()

char * fun_openssl_sha256_hex ( const unsigned char * data, size_t len )

static

Compute SHA-256 digest and return it as a lowercase hex string.

Parameters

data	Pointer to input bytes (may be NULL if len==0).
len	Number of input bytes.

Returns

Newly-allocated hex string on success; NULL on failure. When FUN_WITH_OPENSSL is disabled, returns an allocated empty string.

Note

The caller must free() the returned buffer.

Definition at line 94 of file openssl.c.

fun_openssl_sha512_hex()

char * fun_openssl_sha512_hex ( const unsigned char * data, size_t len )

static

Compute SHA-512 digest and return it as a lowercase hex string.

Parameters

data	Pointer to input bytes (may be NULL if len==0).
len	Number of input bytes.

Returns

Newly-allocated hex string on success; NULL on failure. When FUN_WITH_OPENSSL is disabled, returns an allocated empty string.

Note

The caller must free() the returned buffer.

Definition at line 143 of file openssl.c.