crypto_openssl.h File Reference

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

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Go to the source code of this file.

Macros
#define	OPENVPN_MAX_IV_LENGTH   EVP_MAX_IV_LENGTH
	Maximum length of an IV. More...
#define	OPENVPN_MODE_CBC   EVP_CIPH_CBC_MODE
	Cipher is in CBC mode. More...
#define	OPENVPN_MODE_OFB   EVP_CIPH_OFB_MODE
	Cipher is in OFB mode. More...
#define	OPENVPN_MODE_CFB   EVP_CIPH_CFB_MODE
	Cipher is in CFB mode. More...
#define	OPENVPN_MODE_GCM   EVP_CIPH_GCM_MODE
	Cipher is in GCM mode. More...
#define	OPENVPN_OP_ENCRYPT   1
	Cipher should encrypt. More...
#define	OPENVPN_OP_DECRYPT   0
	Cipher should decrypt. More...
#define	DES_KEY_LENGTH   8
#define	MD4_DIGEST_LENGTH   16
#define	crypto_msg(flags, ...)
	Retrieve any OpenSSL errors, then print the supplied error message. More...

Typedefs
typedef EVP_CIPHER_CTX	cipher_ctx_t
	Generic cipher context. More...
typedef EVP_MD_CTX	md_ctx_t
	Generic message digest context. More...
typedef HMAC_CTX	hmac_ctx_t
	Generic HMAC context. More...
typedef void	provider_t
typedef int	crypto_operation_t

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

Variables
const typedef EVP_CIPHER	evp_cipher_type
const typedef EVP_MD	evp_md_type

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	Format string to print.
format	args (optional) arguments for the format string.

Definition at line 117 of file crypto_openssl.h.

DES_KEY_LENGTH

#define DES_KEY_LENGTH   8

Definition at line 96 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 74 of file crypto_openssl.h.

OPENVPN_MODE_CBC

#define OPENVPN_MODE_CBC   EVP_CIPH_CBC_MODE

Cipher is in CBC mode.

Definition at line 77 of file crypto_openssl.h.

OPENVPN_MODE_CFB

#define OPENVPN_MODE_CFB   EVP_CIPH_CFB_MODE

Cipher is in CFB mode.

Definition at line 83 of file crypto_openssl.h.

OPENVPN_MODE_GCM

#define OPENVPN_MODE_GCM   EVP_CIPH_GCM_MODE

Cipher is in GCM mode.

Definition at line 86 of file crypto_openssl.h.

OPENVPN_MODE_OFB

#define OPENVPN_MODE_OFB   EVP_CIPH_OFB_MODE

Cipher is in OFB mode.

Definition at line 80 of file crypto_openssl.h.

OPENVPN_OP_DECRYPT

#define OPENVPN_OP_DECRYPT   0

Cipher should decrypt.

Definition at line 94 of file crypto_openssl.h.

OPENVPN_OP_ENCRYPT

#define OPENVPN_OP_ENCRYPT   1

Cipher should encrypt.

Definition at line 91 of file crypto_openssl.h.

Typedef Documentation

cipher_ctx_t

typedef EVP_CIPHER_CTX cipher_ctx_t

Generic cipher context.

Definition at line 41 of file crypto_openssl.h.

crypto_operation_t

typedef int crypto_operation_t

Definition at line 88 of file crypto_openssl.h.

hmac_ctx_t

typedef HMAC_CTX hmac_ctx_t

Generic HMAC context.

Definition at line 48 of file crypto_openssl.h.

md_ctx_t

typedef EVP_MD_CTX md_ctx_t

Generic message digest context.

Definition at line 44 of file crypto_openssl.h.

provider_t

typedef void provider_t

Definition at line 51 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.

Parameters

flags

Flags to indicate error type and priority.

Definition at line 235 of file crypto_openssl.c.

References check_debug_level(), D_CRYPT_ERRORS, D_TLS_DEBUG_MED, ERR_get_error_all(), and msg.

Referenced by tls_ctx_load_cert_file(), and tls_ctx_load_pkcs12().

Variable Documentation

evp_cipher_type

const typedef EVP_CIPHER evp_cipher_type

Definition at line 66 of file crypto_openssl.h.

Referenced by cipher_ctx_init(), cipher_kt_block_size(), cipher_kt_insecure(), cipher_kt_iv_size(), cipher_kt_key_size(), cipher_kt_mode_aead(), cipher_kt_mode_cbc(), cipher_kt_mode_ofb_cfb(), cipher_kt_name(), and cipher_valid_reason().

evp_md_type

const typedef EVP_MD evp_md_type

Definition at line 67 of file crypto_openssl.h.

Referenced by hmac_ctx_init(), md_ctx_init(), md_full(), md_get(), md_kt_name(), md_kt_size(), and md_valid().