Data Channel Cryptography OpenSSL-specific backend interface. More...

#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/md5.h>
#include <openssl/sha.h>

Include dependency graph for crypto_openssl.h:

This graph shows which files directly or indirectly include this file:

Macros
#define	OPENVPN_MAX_IV_LENGTH EVP_MAX_IV_LENGTH
	Maximum length of an IV.

#define	OPENVPN_MODE_CBC EVP_CIPH_CBC_MODE
	Cipher is in CBC mode.

#define	OPENVPN_MODE_OFB EVP_CIPH_OFB_MODE
	Cipher is in OFB mode.

#define	OPENVPN_MODE_CFB EVP_CIPH_CFB_MODE
	Cipher is in CFB mode.

#define	OPENVPN_MODE_GCM EVP_CIPH_GCM_MODE
	Cipher is in GCM mode.

#define	OPENVPN_OP_ENCRYPT 1
	Cipher should encrypt.

#define	OPENVPN_OP_DECRYPT 0
	Cipher should decrypt.

#define	MD4_DIGEST_LENGTH 16

#define	crypto_msg(flags, ...)
	Retrieve any OpenSSL errors, then print the supplied error message.

Typedefs
typedef EVP_CIPHER_CTX	cipher_ctx_t
	Generic cipher context.

typedef EVP_MD_CTX	md_ctx_t
	Generic message digest context.

typedef HMAC_CTX	hmac_ctx_t
	Generic HMAC context.

typedef void	provider_t

typedef const EVP_CIPHER	evp_cipher_type

typedef const EVP_MD	evp_md_type

typedef int	crypto_operation_t

Functions
void	crypto_print_openssl_errors (const unsigned int flags)
	Retrieve any occurred OpenSSL errors and print those errors.

Detailed Description

Data Channel Cryptography OpenSSL-specific backend interface.

Definition in file crypto_openssl.h.

Macro Definition Documentation

◆ crypto_msg

#define crypto_msg	(	flags,
		...
	)

Value:

    do { \
        crypto_print_openssl_errors(nonfatal(flags)); \
        msg((flags), __VA_ARGS__); \
    } while (false)

Retrieve any OpenSSL errors, then print the supplied error message.

This is just a convenience wrapper for often occurring situations.

Parameters

flags	Flags to indicate error type and priority.
...	Format string and optional format arguments

Definition at line 116 of file crypto_openssl.h.

◆ MD4_DIGEST_LENGTH

#define MD4_DIGEST_LENGTH 16

Definition at line 97 of file crypto_openssl.h.

◆ OPENVPN_MAX_IV_LENGTH

#define OPENVPN_MAX_IV_LENGTH EVP_MAX_IV_LENGTH

Maximum length of an IV.

Definition at line 75 of file crypto_openssl.h.

◆ OPENVPN_MODE_CBC

#define OPENVPN_MODE_CBC EVP_CIPH_CBC_MODE

Cipher is in CBC mode.

Definition at line 78 of file crypto_openssl.h.

◆ OPENVPN_MODE_CFB

#define OPENVPN_MODE_CFB EVP_CIPH_CFB_MODE

Cipher is in CFB mode.

Definition at line 84 of file crypto_openssl.h.

◆ OPENVPN_MODE_GCM

#define OPENVPN_MODE_GCM EVP_CIPH_GCM_MODE

Cipher is in GCM mode.

Definition at line 87 of file crypto_openssl.h.

◆ OPENVPN_MODE_OFB

#define OPENVPN_MODE_OFB EVP_CIPH_OFB_MODE

Cipher is in OFB mode.

Definition at line 81 of file crypto_openssl.h.

◆ OPENVPN_OP_DECRYPT

#define OPENVPN_OP_DECRYPT 0

Cipher should decrypt.

Definition at line 95 of file crypto_openssl.h.

◆ OPENVPN_OP_ENCRYPT

#define OPENVPN_OP_ENCRYPT 1

Cipher should encrypt.

Definition at line 92 of file crypto_openssl.h.

Typedef Documentation

◆ cipher_ctx_t

typedef EVP_CIPHER_CTX cipher_ctx_t

Generic cipher context.

Definition at line 42 of file crypto_openssl.h.

◆ crypto_operation_t

typedef int crypto_operation_t

Definition at line 89 of file crypto_openssl.h.

◆ evp_cipher_type

typedef const EVP_CIPHER evp_cipher_type

Definition at line 67 of file crypto_openssl.h.

◆ evp_md_type

typedef const EVP_MD evp_md_type

Definition at line 68 of file crypto_openssl.h.

◆ hmac_ctx_t

typedef HMAC_CTX hmac_ctx_t

Generic HMAC context.

Definition at line 49 of file crypto_openssl.h.

◆ md_ctx_t

typedef EVP_MD_CTX md_ctx_t

Generic message digest context.

Definition at line 45 of file crypto_openssl.h.

◆ provider_t

typedef void provider_t

Definition at line 52 of file crypto_openssl.h.

Function Documentation

◆ crypto_print_openssl_errors()

void crypto_print_openssl_errors ( const unsigned int flags )

Retrieve any occurred OpenSSL errors and print those errors.

Note that this function uses the not thread-safe OpenSSL error API.