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unit UOpenSSL;
{ Copyright (c) 2016 by Albert Molina
Distributed under the MIT software license, see the accompanying file LICENSE
or visit http://www.opensource.org/licenses/mit-license.php.
This unit is a part of the PascalCoin Project, an infinitely scalable
cryptocurrency. Find us here:
Web: https://www.pascalcoin.org
Source: https://github.com/PascalCoin/PascalCoin
Acknowledgements
- Portions of this unit contains code from
https://github.com/Arvur/OpenSSL-Delphi (unspecified license, public code)
If you like it, consider a donation using Bitcoin:
16K3HCZRhFUtM8GdWRcfKeaa6KsuyxZaYk
THIS LICENSE HEADER MUST NOT BE REMOVED.
}
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
{$I ./../config.inc}
{$IFDEF ANDROID}
Uses UBaseTypes;
{$ENDIF}
var
{$IF Defined(UNIX) or Defined(ANDROID) or Defined(DARWIN)}
SSL_C_LIB : String = 'libcrypto';
{$IFDEF OpenSSL10}
SSL_C_LIB_Versions : array [0..4] of string = ('','.10','.1.0.2','.1.0.1','.1.0.0');
{$ELSE}
SSL_C_LIB_Versions : array [0..2] of string = ('.1.1','.1.1.0','.1.1.1');
{$ENDIF}
{$ELSE}
// We are on Windows Systems
SSL_C_LIB_Versions : array [0..0] of string = (''); // No versioning available
{$IFDEF OpenSSL10}
{$IF Defined(CPU64) or Defined(CPUX64)}
SSL_C_LIB : String = 'libeay64';
{$ELSE}
SSL_C_LIB : String = 'libeay32';
{$ENDIF}
{$ELSE}
{$IF Defined(CPU64) or Defined(CPUX64)}
SSL_C_LIB : String = 'libcrypto-1_1-x64';
{$ELSE}
SSL_C_LIB : String = 'libcrypto-1_1';
{$ENDIF}
{$ENDIF}
{$ENDIF}
const
SHA_LBLOCK = 16;
RIPEMD160_CBLOCK = 64;
RIPEMD160_LBLOCK = (RIPEMD160_CBLOCK div 4);
PKCS5_SALT_LEN = 8;
EVP_MAX_MD_SIZE = 64;
SHA512_DIGEST_LENGTH = 64;
EVP_MAX_IV_LENGTH = 16;
EVP_MAX_BLOCK_LENGTH = 32;
POINT_CONVERSION_COMPRESSED = 2;
//
SN_secp256k1 = 'secp256k1';
NID_secp256k1 = 714;
SN_secp384r1 = 'secp384r1';
NID_secp384r1 = 715;
SN_sect283k1 = 'sect283k1';
CT_NID_sect283k1 = 729;
SN_secp521r1 = 'secp521r1';
CT_NID_secp521r1 = 716;
type
size_t = Word;
qword = UInt64;
PVOID = Pointer;
TC_INT = LongInt;
PC_INT = ^TC_INT;
TC_UINT = LongWord;
PC_UINT = ^TC_UINT;
TC_LONG = LongInt;
PC_LONG = ^TC_LONG;
TC_ULONG = LongWord;
PC_ULONG = ^TC_ULONG;
TC_ULONGLONG = qword;
TC_time_t = TC_LONG;
TC_USHORT = Word;
PC_USHORT = ^TC_USHORT;
TC_SIZE_T = LongWord;
PC_SIZE_T = ^TC_SIZE_T;
BN_ULONG = TC_ULONGLONG;
PBN_ULONG = ^BN_ULONG;
DES_LONG= TC_ULONG;
PDES_LONG = ^DES_LONG;
point_conversion_form_t = TC_UINT;
TC_OSSL_SSIZE_T = TC_LONG;
IDEA_INT = TC_UINT;
MD4_LONG = TC_ULONG;
MD5_LONG = TC_ULONG;
RC2_INT = TC_UINT;
RC4_INT = TC_UINT;
RC5_32_INT = TC_ULONG;
RIPEMD160_LONG = TC_ULONG;
SHA_LONG = TC_ULONG;
SHA_LONG64 = UInt64;
PBN_CTX = Pointer;
BIGNUM = record
d : PBN_ULONG;
top : TC_INT;
dmax : TC_INT;
neg : TC_INT;
flags : TC_INT;
end;
PBIGNUM = ^BIGNUM;
PPBIGNUM = ^PBIGNUM;
PEC_KEY = Pointer;
PPEC_KEY = ^PEC_KEY;
PEC_GROUP = Pointer;
PPEC_GROUP = ^PEC_GROUP;
PEC_POINT = ^EC_POINT;
PEC_METHOD = Pointer;
EC_POINT = record
meth: PEC_METHOD;
X: BIGNUM;
Y: BIGNUM;
Z: BIGNUM;
Z_is_one: TC_INT;
end;
PSHA256_CTX = ^SHA256_CTX;
PPSHA256_CTX = ^PSHA256_CTX;
SHA256_CTX = record
_h: array[0..7] of SHA_LONG;
_Nl,_Nh: SHA_LONG;
_data: array[0..SHA_LBLOCK-1] of SHA_LONG;
_num,_md_len: TC_UINT;
end; { record }
PRIPEMD160_CTX = ^RIPEMD160_CTX;
PPRIPEMD160_CTX = ^PRIPEMD160_CTX;
RIPEMD160_CTX = record
_A,_B,_C,_D,_E: RIPEMD160_LONG;
_Nl,_Nh: RIPEMD160_LONG;
_data: array [0..RIPEMD160_LBLOCK-1] of RIPEMD160_LONG;
_num: TC_UINT;
end; { record }
PECDSA_SIG = ^ECDSA_SIG;
PPECDSA_SIG = ^PECDSA_SIG;
ECDSA_SIG = record
_r: PBIGNUM;
_s: PBIGNUM;
end; { record }
EVP_MD_CTX = Pointer;
PEVP_MD_CTX = ^EVP_MD_CTX;
PPEVP_MD_CTX = ^PEVP_MD_CTX;
PEVP_MD = ^EVP_MD;
PPEVP_MD = ^PEVP_MD;
PENGINE = Pointer;
PPENGINE = ^PENGINE;
PEVP_CIPHER = ^EVP_CIPHER;
PPEVP_CIPHER = ^PEVP_CIPHER;
EVP_CIPHER_CTX = Pointer;
PEVP_CIPHER_CTX = ^EVP_CIPHER_CTX;
PASN1_TYPE = Pointer;
EVP_CIPHER = record
nid : TC_Int;
block_size : TC_Int;
key_len : TC_Int;
iv_len : TC_Int;
flags : TC_ULONG;
init : function (ctx : PEVP_CIPHER_CTX; key : PAnsiChar; iv : PAnsiChar; enc : TC_Int): TC_Int; cdecl;
do_cipher : function (ctx : PEVP_CIPHER_CTX; _out : PAnsiChar; _in : PAnsiChar; inl : size_t) : TC_Int; cdecl;
cleanup : function (_para1 : PEVP_CIPHER_CTX): TC_Int; cdecl;
ctx_size : TC_Int;
set_asn1_parameters : function (_para1 : PEVP_CIPHER_CTX; _para2 : PASN1_TYPE) : TC_Int; cdecl;
get_asn1_parameters :function (_para1 : PEVP_CIPHER_CTX; _para2 : PASN1_TYPE) : TC_Int; cdecl;
ctrl : function (_para1 : PEVP_CIPHER_CTX; _type : TC_Int; arg : TC_Int; ptr : Pointer): TC_Int; cdecl;
app_data : Pointer;
end;
ecdh_kdf = function(const _in: Pointer; _inlen: TC_SIZE_T; _out: Pointer; var _outlen: TC_SIZE_T): pointer; cdecl;
HMAC_CTX = Pointer;
PHMAC_CTX = ^HMAC_CTX;
PPHMAC_CTX = ^PHMAC_CTX;
EVP_MD = record
_type : TC_Int;
pkey_type : TC_Int;
md_size : TC_Int;
flags : TC_ULONG;
init : function (ctx : PEVP_MD_CTX) : TC_Int; cdecl;
update : function (ctx : PEVP_MD_CTX; data : Pointer; count : size_t):TC_Int; cdecl;
_final : function (ctx : PEVP_MD_CTX; md : PAnsiChar) : TC_Int; cdecl;
copy : function (_to : PEVP_MD_CTX; from : PEVP_MD_CTX ) : TC_Int; cdecl;
cleanup : function(ctx : PEVP_MD_CTX) : TC_Int; cdecl;
sign : function(_type : TC_Int; m : PAnsiChar; m_length : TC_UINT; sigret : PAnsiChar; siglen : TC_UINT; key : Pointer) : TC_Int; cdecl;
verify : function(_type : TC_Int; m : PAnsiChar; m_length : PAnsiChar; sigbuf : PAnsiChar; siglen : TC_UINT; key : Pointer) : TC_Int; cdecl;
required_pkey_type : array [0..4] of TC_Int;
block_size : TC_Int;
ctx_size : TC_Int;
md_ctrl: function( ctx: PEVP_MD_CTX; cmd: TC_INT; p1: TC_INT; p2: Pointer): TC_INT; cdecl;
end;
var
OpenSSL_version_num: function: TC_ULONG; cdecl = nil;
ERR_get_error: function: TC_ULONG; cdecl = nil;
ERR_error_string: function(e: TC_ULONG; _buf: PAnsiChar): PAnsiChar; cdecl = nil;
ERR_clear_error: procedure; cdecl = nil;
BN_CTX_new: function: PBN_CTX; cdecl = nil;
BN_CTX_free: procedure(c: PBN_CTX) cdecl = nil;
BN_num_bits: function(a: PBIGNUM): TC_INT; cdecl = nil;
BN_bin2bn: function(s: PAnsiChar; len: TC_INT; ret: PBIGNUM): PBIGNUM; cdecl = nil;
BN_bn2bin: function(a: PBIGNUM; _to: PAnsiChar): TC_INT; cdecl = nil;
BN_new: function: PBIGNUM; cdecl = nil;
BN_free: procedure(a: PBIGNUM); cdecl = nil;
BN_bn2hex: function(const a: PBIGNUM): PAnsiChar; cdecl = nil;
BN_bn2dec: function(const a: PBIGNUM): PAnsiChar;cdecl = nil;
BN_hex2bn: function(a: PPBIGNUM; str: PAnsiChar): TC_INT; cdecl = nil;
BN_add: function(r: PBIGNUM; a: PBIGNUM; b: PBIGNUM): TC_INT; cdecl = nil;
BN_mul: function(r: PBIGNUM; a: PBIGNUM; b: PBIGNUM; ctx: PBN_CTX): TC_INT; cdecl = nil;
BN_sqr: function(r: PBIGNUM; a: PBIGNUM; ctx: PBN_CTX): TC_INT; cdecl = nil;
BN_set_negative: procedure(b: PBIGNUM; n: TC_INT); cdecl = nil;
BN_div: function(dv: PBIGNUM; rem: PBIGNUM; m: PBIGNUM; d: PBIGNUM; ctx : PBN_CTX): TC_INT; cdecl = nil;
BN_nnmod: function(r: PBIGNUM; m: PBIGNUM; d: PBIGNUM; ctx: PBN_CTX ): TC_INT; cdecl = nil;
BN_cmp: function(a: PBIGNUM; b: PBIGNUM): TC_INT; cdecl = nil;
BN_copy: function(a: PBIGNUM;b: PBIGNUM): PBIGNUM; cdecl = nil;
BN_lshift: function(r: PBIGNUM; a: PBIGNUM; n: TC_INT): TC_INT; cdecl = nil;
BN_lshift1: function(r: PBIGNUM; a: PBIGNUM): TC_INT; cdecl = nil;
BN_rshift: function(r: PBIGNUM; const a: PBIGNUM; n: TC_INT): TC_INT; cdecl = nil;
BN_rshift1: function(r: PBIGNUM; const a: PBIGNUM): TC_INT; cdecl = nil;
BN_clear: procedure(a: PBIGNUM); cdecl = nil;
BN_dec2bn: function(a: PPBIGNUM; str: PAnsiChar): TC_INT; cdecl = nil;
BN_set_word: function(a: PBIGNUM; w: BN_ULONG): TC_INT; cdecl = nil;
BN_sub: function(r: PBIGNUM; a: PBIGNUM; b: PBIGNUM): TC_INT; cdecl = nil;
BN_exp: function(r: PBIGNUM; a: PBIGNUM; p: PBIGNUM; ctx: PBN_CTX): TC_INT; cdecl = nil;
EC_KEY_new: function: PEC_KEY; cdecl = nil;
EC_KEY_free: procedure(key: PEC_KEY); cdecl = nil;
EC_KEY_new_by_curve_name: function(nid: TC_INT): PEC_KEY; cdecl = nil;
EC_KEY_generate_key: function(key: PEC_KEY): TC_INT; cdecl = nil;
EC_KEY_get0_group: function(const key: PEC_KEY): PEC_GROUP; cdecl = nil;
EC_KEY_get0_private_key: function(const key: PEC_KEY): PBIGNUM; cdecl = nil;
EC_KEY_set_private_key: function(key: PEC_KEY; const prv: PBIGNUM): TC_INT; cdecl = nil;
EC_KEY_get0_public_key: function(const key: PEC_KEY): PEC_POINT; cdecl = nil;
EC_KEY_set_public_key: function(key: PEC_KEY; const pub: PEC_POINT): TC_INT; cdecl = nil;
EC_KEY_set_group: function(key: PEC_KEY; group: PEC_GROUP): TC_INT; cdecl = nil;
EC_KEY_check_key: function(key: PEC_KEY): TC_INT; cdecl = nil;
EC_GROUP_new_by_curve_name: function(nid: TC_INT): PEC_GROUP; cdecl = nil;
EC_GROUP_free: procedure (group: PEC_GROUP); cdecl = nil;
EC_POINT_new: function(const group: PEC_GROUP): PEC_POINT; cdecl = nil;
EC_POINT_free: procedure(point: PEC_POINT); cdecl = nil;
EC_POINT_set_affine_coordinates_GFp: function( group: PEC_GROUP; p: PEC_POINT; x: PBIGNUM; y: PBIGNUM; ctx: PBN_CTX): TC_INT; cdecl = nil;
EC_POINT_get_affine_coordinates_GFp: function( group: PEC_GROUP; p: PEC_POINT; x: PBIGNUM; y: PBIGNUM; ctx: PBN_CTX): TC_INT; cdecl = nil;
EC_POINT_mul: function( group: PEC_GROUP; r: PEC_POINT; bn: PBIGNUM; pq: PEC_POINT; bm: PBIGNUM; ctx: PBN_CTX): TC_INT; cdecl = nil;
EC_POINT_point2oct: function( group: PEC_GROUP; p: PEC_POINT; form: point_conversion_form_t; buf: PAnsiChar; len: TC_SIZE_T; ctx: PBN_CTX): TC_SIZE_T; cdecl = nil;
EC_POINT_oct2point: function( group: PEC_GROUP; p: PEC_POINT; buf: PAnsiChar; len: TC_SIZE_T; ctx: PBN_CTX): TC_INT; cdecl = nil;
EC_POINT_point2bn: function( group: PEC_GROUP; point: PEC_POINT; form: point_conversion_form_t; b: PBIGNUM; ctx: PBN_CTX): PBIGNUM; cdecl = nil;
EC_POINT_bn2point: function( group: PEC_GROUP; b: PBIGNUM; point: PEC_POINT; ctx: PBN_CTX): PEC_POINT; cdecl = nil;
CRYPTO_free : procedure(ptr : Pointer) cdecl = nil;
SHA256_Init: function(c: PSHA256_CTX): TC_INT; cdecl = nil;
SHA256_Update: function(c: PSHA256_CTX; const data: Pointer; len: TC_SIZE_T): TC_INT; cdecl = nil;
SHA256_Final: function(md: PAnsiChar; c: PSHA256_CTX): TC_INT; cdecl = nil;
SHA256: function(const d: PAnsiChar; n: TC_SIZE_T;md: PAnsiChar): PAnsiChar; cdecl = nil;
SHA256_Transform: procedure(c: PSHA256_CTX; const data: PAnsiChar); cdecl = nil;
SHA512: function(const d: PAnsiChar; n: TC_SIZE_T;md: PAnsiChar): PAnsiChar; cdecl = nil;
RIPEMD160_Init: function(_c: PRIPEMD160_CTX): TC_INT; cdecl = nil;
RIPEMD160_Update: function(_c: PRIPEMD160_CTX; const _data: Pointer; _len: TC_SIZE_T): TC_INT; cdecl = nil;
RIPEMD160_Final: function(_md: PAnsiChar; _c: PRIPEMD160_CTX): TC_INT; cdecl = nil;
RIPEMD160: function(const _d: PAnsiChar; _n: TC_SIZE_T; _md: PAnsiChar): PAnsiChar; cdecl = nil;
RIPEMD160_Transform: procedure(_c: PRIPEMD160_CTX; const _b: PAnsiChar); cdecl = nil;
ECDSA_SIG_new: function: PECDSA_SIG; cdecl = nil;
ECDSA_SIG_free: procedure(_sig: PECDSA_SIG); cdecl = nil;
i2d_ECDSA_SIG: function(const _sig: PECDSA_SIG; _pp: PPAnsiChar): TC_INT; cdecl = nil;
d2i_ECDSA_SIG: function(_sig: PPECDSA_SIG; const _pp: PPAnsiChar; _len: TC_LONG): PECDSA_SIG; cdecl = nil;
ECDSA_do_sign: function(const _dgst: PAnsiChar; _dgst_len: TC_INT; _eckey: PEC_KEY): PECDSA_SIG; cdecl = nil;
ECDSA_do_sign_ex: function(const _dgst: PAnsiChar; _dgstlen: TC_INT; const _kinv: PBIGNUM; const _rp: Pointer; _eckey: PEC_KEY): PECDSA_SIG; cdecl = nil;
ECDSA_do_verify: function(const _dgst: PAnsiChar; _dgst_len: TC_INT; const _sig: PECDSA_SIG; _eckey: PEC_KEY): TC_INT; cdecl = nil;
{$IFDEF OpenSSL10}
{$ELSE}
ECDSA_SIG_get0: procedure(const _sig : PECDSA_SIG; const pr: PPBIGNUM; const ps:PPBIGNUM);
ECDSA_SIG_set0: function(_sig : PECDSA_SIG; r,s : PBIGNUM): TC_INT; cdecl = nil;
{$ENDIF}
ECDSA_size: function(const _eckey: PEC_KEY): TC_INT; cdecl = nil;
ECDSA_sign_setup: function(_eckey: PEC_KEY; _ctx: PBN_CTX; _kinv: PPBIGNUM; _rp: PPBIGNUM): TC_INT; cdecl = nil;
ECDSA_sign: function(_type: TC_INT; const _dgst: PAnsiChar; _dgstlen: TC_INT; _sig: PAnsiChar; var _siglen: TC_UINT; _eckey: PEC_KEY): TC_INT; cdecl = nil;
ECDSA_sign_ex: function(_type: TC_INT; const _dgst: PAnsiChar; _dgstlen: TC_INT; _sig: PAnsiChar; var _siglen: TC_UINT; const _kinv: PBIGNUM;const _rp: PBIGNUM; _eckey: PEC_KEY): TC_INT; cdecl = nil;
ECDSA_verify: function(_type: TC_INT; const _dgst: PAnsiChar; _dgstlen: TC_INT; const _sig: PAnsiChar; _siglen: TC_INT; _eckey: PEC_KEY): TC_INT; cdecl = nil;
RAND_pseudo_bytes: function(buf: PAnsiChar; num: TC_INT): TC_INT; cdecl = nil;
EVP_sha256: function: PEVP_MD; cdecl = nil;
{$IFDEF OpenSSL10}
EVP_MD_CTX_init: procedure(ctx: PEVP_MD_CTX); cdecl = nil;
EVP_MD_CTX_cleanup: function(ctx: PEVP_MD_CTX): TC_INT; cdecl = nil;
EVP_MD_CTX_create: function: PEVP_MD_CTX; cdecl = nil;
EVP_MD_CTX_destroy: procedure(ctx: PEVP_MD_CTX); cdecl = nil;
EVP_CIPHER_CTX_init: procedure(a: PEVP_CIPHER_CTX); cdecl = nil;
EVP_CIPHER_CTX_cleanup: function(a: PEVP_CIPHER_CTX): TC_INT; cdecl = nil;
{$ELSE}
EVP_MD_CTX_new: function : PEVP_MD_CTX; cdecl = nil;
EVP_MD_CTX_free: function(ctx: PEVP_MD_CTX): TC_INT; cdecl = nil;
{$ENDIF}
EVP_DigestInit_ex: function(ctx: PEVP_MD_CTX; const _type: PEVP_MD; impl: PENGINE): TC_INT; cdecl = nil;
EVP_DigestUpdate: function(ctx: PEVP_MD_CTX;const d: Pointer; cnt: TC_SIZE_T): TC_INT; cdecl = nil;
EVP_DigestFinal_ex: function(ctx: PEVP_MD_CTX;md: PAnsiChar;var s: TC_INT): TC_INT; cdecl = nil;
EVP_aes_256_cbc: function: PEVP_CIPHER; cdecl = nil;
EVP_CIPHER_CTX_free: procedure(a: PEVP_CIPHER_CTX); cdecl = nil;
EVP_CIPHER_CTX_new: function: PEVP_CIPHER_CTX; cdecl = nil;
EVP_DecryptInit: function(ctx: PEVP_CIPHER_CTX;const cipher: PEVP_CIPHER; const key: PAnsiChar; const iv: PAnsiChar): TC_INT; cdecl = nil;
EVP_DecryptInit_ex: function(ctx: PEVP_CIPHER_CTX;const cipher: PEVP_CIPHER; impl: PENGINE; const key: PAnsiChar; const iv: PAnsiChar): TC_INT; cdecl = nil;
EVP_DecryptUpdate: function(ctx: PEVP_CIPHER_CTX; _out: PAnsiChar; var outl: TC_INT; const _in: PAnsiChar; inl: TC_INT): TC_INT; cdecl = nil;
EVP_DecryptFinal: function(ctx: PEVP_CIPHER_CTX; outm: PAnsiChar; var outl: TC_INT): TC_INT; cdecl = nil;
EVP_EncryptInit: function(ctx: PEVP_CIPHER_CTX;const cipher: PEVP_CIPHER; const key: PAnsiChar; const iv: PAnsiChar): TC_INT; cdecl = nil;
EVP_EncryptInit_ex: function(ctx: PEVP_CIPHER_CTX;const cipher: PEVP_CIPHER; impl: PENGINE; const key: PAnsiChar; const iv: PAnsiChar): TC_INT; cdecl = nil;
EVP_EncryptUpdate: function(ctx: PEVP_CIPHER_CTX; _out: PAnsiChar; var outl: TC_INT; const _in: PAnsiChar; inl: TC_INT): TC_INT; cdecl = nil;
EVP_EncryptFinal_ex: function(ctx: PEVP_CIPHER_CTX; _out: PAnsiChar; var outl: TC_INT): TC_INT; cdecl = nil;
EVP_EncryptFinal: function(ctx: PEVP_CIPHER_CTX; _out: PAnsiChar; var outl: TC_INT): TC_INT; cdecl = nil;
EVP_CIPHER_CTX_block_size: function(const ctx: PEVP_CIPHER_CTX): TC_INT; cdecl = nil;
EVP_md5: function: PEVP_MD; cdecl = nil;
EVP_CIPHER_key_length: function(const cipher: PEVP_CIPHER): TC_INT; cdecl = nil;
EVP_CIPHER_block_size: function(const cipher: PEVP_CIPHER): TC_INT; cdecl = nil;
EVP_MD_size: function(const md: PEVP_MD): TC_INT; cdecl = nil;
EVP_CIPHER_CTX_set_padding: function(c: PEVP_CIPHER_CTX; pad: TC_INT): TC_INT; cdecl = nil;
EVP_DecryptFinal_ex: function(ctx: PEVP_CIPHER_CTX; outm: PAnsiChar; var outl: TC_INT): TC_INT; cdecl = nil;
ECDH_compute_key: function(_out: Pointer; outlen: TC_SIZE_T; const _pub_key: PEC_POINT; _ecdh: PEC_KEY; KDF: ecdh_kdf): TC_INT; cdecl = nil;
{$IFDEF OpenSSL10}
HMAC_CTX_init: procedure(_ctx: PHMAC_CTX); cdecl = nil;
HMAC_CTX_cleanup: procedure(_ctx: PHMAC_CTX); cdecl = nil;
{$ELSE}
HMAC_CTX_new: function : PHMAC_CTX; cdecl = nil;
HMAC_CTX_free: procedure(_ctx: PHMAC_CTX); cdecl = nil;
{$ENDIF}
HMAC_Init: function(_ctx: PHMAC_CTX; const _key: Pointer; _len: TC_INT;const _md: PEVP_MD): TC_INT; cdecl = nil;
HMAC_Init_ex: function(_ctx: PHMAC_CTX; const _key: Pointer; _len: TC_INT;const _md: PEVP_MD; _impl: PENGINE): TC_INT; cdecl = nil;
HMAC_Update: function(_ctx: PHMAC_CTX; const _data: PAnsiChar; _len: TC_SIZE_T): TC_INT; cdecl = nil;
HMAC_Final: function(_ctx: PHMAC_CTX; _md: PAnsiChar; var _len: TC_UINT): TC_INT; cdecl = nil;
HMAC: function(const _evp_md: PEVP_MD; const _key: Pointer; _key_len: TC_INT; const _d: PAnsiChar; _n: TC_SIZE_T; _md: PAnsiChar; var _md_len: TC_UINT): PAnsiChar; cdecl = nil;
HMAC_CTX_copy: function(_dctx: PHMAC_CTX; _sctx: PHMAC_CTX): TC_INT; cdecl = nil;
HMAC_CTX_set_flags: procedure(_ctx: PHMAC_CTX; _flags: TC_ULONG); cdecl = nil;
function SSLCryptHandle: THandle;
function LoadSSLCrypt: Boolean;
function LoadFunctionCLib(const FceName: String; const ACritical : Boolean = True): Pointer;
function InitSSLFunctions : Boolean;
function BN_num_bytes(a: PBIGNUM): TC_INT;
procedure OpenSSL_free(ptr: Pointer);
function OpenSSLVersion : Cardinal;
function CaptureLastSSLError : String;
function GetOpenSSLLibraryName : String;
implementation
uses {$IFDEF UNIX}dynlibs,{$ENDIF}
{$IFDEF MSWINDOWS} windows,{$ENDIF}
sysutils;
var hCrypt: THandle = 0;
_LibraryName : String = '';
function GetOpenSSLLibraryName : String;
begin
Result := _LibraryName;
end;
function SSLCryptHandle: THandle;
begin
Result := hCrypt;
end;
function TryToLoadLibrary(const ALibName : String; const ALibVersions : array of String) : HMODULE;
function GetLibName(const APath, AVersion : String) : String;
var LExtension : String;
begin
{$IF Defined(IOS) or Defined(DARWIN)}
LExtension := '.dylib';
Result := APath+ALibName+AVersion+LExtension;
{$ELSE}
{$IF Defined(UNIX) or Defined(ANDROID)}
LExtension := '.so';
Result := APath+ALibName+LExtension+AVersion;
{$ELSE}
LExtension := '.dll';
Result := APath+ALibName+AVersion+LExtension;
{$ENDIF}
{$ENDIF}
end;
var
i,jRound : Integer;
LPath : String;
begin
Result := 0;
// First round will try to load library on same folder than app
for jRound := 1 to 2 do begin
if jRound=1 then LPath := '.'+PathDelim
else LPath := ''; // Second round, no Path (OS will search)
for i := Low(ALibVersions) to High(ALibVersions) do begin
_LibraryName := GetLibName(LPath,ALibVersions[i]);
{$IFDEF FPC}
Result := LoadLibrary(PAnsiChar(_LibraryName));
{$ELSE}
Result := LoadLibrary(PWideChar(_LibraryName));
{$ENDIF}
if Result <> 0 then begin
Exit;
end else _LibraryName := '';
end;
end;
end;
function LoadSSLCrypt: Boolean;
begin
If hCrypt=0 then begin
hCrypt := TryToLoadLibrary(SSL_C_LIB,SSL_C_LIB_Versions);
end;
Result := hCrypt <> 0;
end;
function OpenSSLVersion : Cardinal;
begin
if Assigned(OpenSSL_version_num) then Result := OpenSSL_version_num
else Result := 0;
end;
function LoadFunctionCLib(const FceName: String; const ACritical : Boolean = True): Pointer;
begin
if SSLCryptHandle = 0 then begin
LoadSSLCrypt;
end;
{$IFDEF UNIX}
Result := GetProcAddress(SSLCryptHandle, AnsiString(FceName));
{$ELSE}
Result := {Windows.}GetProcAddress(SSLCryptHandle, PChar(FceName));
{$ENDIF}
if ACritical then begin
if Result = nil then begin
{$IFDEF FPC}
raise Exception.CreateFmt('Error loading OpenSSL library function "%s" error: "%s". Are you sure that using OpenSSL good version?', [FceName, SysErrorMessage(GetLastOSError)]);
{$ELSE}
raise Exception.CreateFmt('Error loading OpenSSL library function "%s" error: "%s". Are you sure that using OpenSSL good version?', [FceName, SysErrorMessage(GetLastError)]);
{$ENDIF}
end;
end;
end;
function InitSSLFunctions : Boolean;
Begin
If not LoadSSLCrypt then begin
result := false;
exit;
end else result := true;
if @OpenSSL_version_num=nil then begin
// Important note: Only OpenSSL v1.1 has function "OpenSSL_version_num"
@OpenSSL_version_num := LoadFunctionCLib('OpenSSL_version_num',False);
if Not Assigned(OpenSSL_version_num) then begin
{$IFNDEF OpenSSL10}
Raise Exception.Create('PascalCoin needs OpenSSL v1.1, your current DLL is lower version: '+SSL_C_LIB);
{$ENDIF}
end;
end;
if @ERR_get_error = nil then begin
@ERR_get_error:= LoadFunctionCLib('ERR_get_error');
@ERR_clear_error:= LoadFunctionCLib('ERR_clear_error');
@ERR_error_string:= LoadFunctionCLib('ERR_error_string');
@BN_CTX_new:= LoadFunctionCLib('BN_CTX_new');
@BN_CTX_free:= LoadFunctionCLib('BN_CTX_free');
@BN_num_bits:= LoadFunctionCLib('BN_num_bits');
@BN_bin2bn:= LoadFunctionCLib('BN_bin2bn');
@BN_bn2bin:= LoadFunctionCLib('BN_bn2bin');
@BN_new:= LoadFunctionCLib('BN_new');
@BN_free:= LoadFunctionCLib('BN_free');
@BN_bn2hex:= LoadFunctionCLib('BN_bn2hex');
@BN_bn2dec:= LoadFunctionCLib('BN_bn2dec');
@BN_hex2bn:= LoadFunctionCLib('BN_hex2bn');
@BN_add:= LoadFunctionCLib('BN_add');
@BN_mul:= LoadFunctionCLib('BN_mul');
@BN_sqr:= LoadFunctionCLib('BN_sqr');
@BN_set_negative:= LoadFunctionCLib('BN_set_negative');
@BN_div:= LoadFunctionCLib('BN_div');
@BN_nnmod:= LoadFunctionCLib('BN_nnmod');
@BN_cmp:= LoadFunctionCLib('BN_cmp');
@BN_copy:= LoadFunctionCLib('BN_copy');
@BN_lshift:= LoadFunctionCLib('BN_lshift');
@BN_lshift1:= LoadFunctionCLib('BN_lshift1');
@BN_rshift:= LoadFunctionCLib('BN_rshift');
@BN_rshift1:= LoadFunctionCLib('BN_rshift1');
@BN_clear:= LoadFunctionCLib('BN_clear');
@BN_dec2bn:= LoadFunctionCLib('BN_dec2bn');
@BN_set_word:= LoadFunctionCLib('BN_set_word');
@BN_sub:= LoadFunctionCLib('BN_sub');
@BN_exp:= LoadFunctionCLib('BN_exp');
@EC_KEY_new := LoadFunctionCLib('EC_KEY_new');
@EC_KEY_free := LoadFunctionCLib('EC_KEY_free');
@EC_KEY_new_by_curve_name:= LoadFunctionCLib('EC_KEY_new_by_curve_name');
@EC_KEY_generate_key := LoadFunctionCLib('EC_KEY_generate_key');
@EC_KEY_get0_group:= LoadFunctionCLib('EC_KEY_get0_group');
@EC_KEY_get0_private_key:= LoadFunctionCLib('EC_KEY_get0_private_key');
@EC_KEY_set_private_key:= LoadFunctionCLib('EC_KEY_set_private_key');
@EC_KEY_get0_public_key:= LoadFunctionCLib('EC_KEY_get0_public_key');
@EC_KEY_set_public_key:= LoadFunctionCLib('EC_KEY_set_public_key');
@EC_KEY_set_group := LoadFunctionCLib('EC_KEY_set_group');
@EC_KEY_check_key := LoadFunctionCLib('EC_KEY_check_key');
@EC_GROUP_new_by_curve_name := LoadFunctionCLib('EC_GROUP_new_by_curve_name');
@EC_GROUP_free := LoadFunctionCLib('EC_GROUP_free');
@EC_POINT_new:= LoadFunctionCLib('EC_POINT_new');
@EC_POINT_free:= LoadFunctionCLib('EC_POINT_free');
@EC_POINT_set_affine_coordinates_GFp:= LoadFunctionCLib('EC_POINT_set_affine_coordinates_GFp');
@EC_POINT_get_affine_coordinates_GFp:= LoadFunctionCLib('EC_POINT_get_affine_coordinates_GFp');
@EC_POINT_mul:= LoadFunctionCLib('EC_POINT_mul');
@EC_POINT_point2oct:= LoadFunctionCLib('EC_POINT_point2oct');
@EC_POINT_oct2point:= LoadFunctionCLib('EC_POINT_oct2point');
@SHA256_Init:= LoadFunctionCLib('SHA256_Init');
@SHA256_Update:= LoadFunctionCLib('SHA256_Update');
@SHA256_Final:= LoadFunctionCLib('SHA256_Final');
@SHA256:= LoadFunctionCLib('SHA256');
@SHA256_Transform:= LoadFunctionCLib('SHA256_Transform');
@SHA512:= LoadFunctionCLib('SHA512');
@RIPEMD160:= LoadFunctionCLib('RIPEMD160');
@ECDSA_SIG_new:= LoadFunctionCLib('ECDSA_SIG_new');
@ECDSA_SIG_free:= LoadFunctionCLib('ECDSA_SIG_free');
@i2d_ECDSA_SIG:= LoadFunctionCLib('i2d_ECDSA_SIG');
@d2i_ECDSA_SIG:= LoadFunctionCLib('d2i_ECDSA_SIG');
@ECDSA_do_sign:= LoadFunctionCLib('ECDSA_do_sign');
@ECDSA_do_sign_ex:= LoadFunctionCLib('ECDSA_do_sign_ex');
@ECDSA_do_verify:= LoadFunctionCLib('ECDSA_do_verify');
{$IFDEF OpenSSL10}
{$ELSE}
@ECDSA_SIG_get0:= LoadFunctionCLib('ECDSA_SIG_get0');
@ECDSA_SIG_set0:= LoadFunctionCLib('ECDSA_SIG_set0');
{$ENDIF}
@ECDSA_size:= LoadFunctionCLib('ECDSA_size');
@ECDSA_sign_setup:= LoadFunctionCLib('ECDSA_sign_setup');
@ECDSA_sign:= LoadFunctionCLib('ECDSA_sign');
@ECDSA_sign_ex:= LoadFunctionCLib('ECDSA_sign_ex');
@ECDSA_verify:= LoadFunctionCLib('ECDSA_verify');
@RAND_pseudo_bytes:= LoadFunctionCLib('RAND_pseudo_bytes');
@EVP_sha256:= LoadFunctionCLib('EVP_sha256');
{$IFDEF OpenSSL10}
@EVP_MD_CTX_init:= LoadFunctionCLib('EVP_MD_CTX_init');
@EVP_MD_CTX_cleanup:= LoadFunctionCLib('EVP_MD_CTX_cleanup');
@EVP_MD_CTX_create:= LoadFunctionCLib('EVP_MD_CTX_create');
@EVP_MD_CTX_destroy:= LoadFunctionCLib('EVP_MD_CTX_destroy');
@EVP_CIPHER_CTX_init:= LoadFunctionCLib('EVP_CIPHER_CTX_init');
@EVP_CIPHER_CTX_cleanup:= LoadFunctionCLib('EVP_CIPHER_CTX_cleanup');
{$ELSE}
@EVP_MD_CTX_new:= LoadFunctionCLib('EVP_MD_CTX_new');
@EVP_MD_CTX_free:= LoadFunctionCLib('EVP_MD_CTX_free');
{$ENDIF}
@EVP_DigestInit_ex:= LoadFunctionCLib('EVP_DigestInit_ex');
@EVP_DigestUpdate:= LoadFunctionCLib('EVP_DigestUpdate');
@EVP_DigestFinal_ex:= LoadFunctionCLib('EVP_DigestFinal_ex');
@EVP_aes_256_cbc:= LoadFunctionCLib('EVP_aes_256_cbc');
@EVP_CIPHER_CTX_free:= LoadFunctionCLib('EVP_CIPHER_CTX_free');
@EVP_CIPHER_CTX_new:= LoadFunctionCLib('EVP_CIPHER_CTX_new');
@EVP_DecryptInit:= LoadFunctionCLib('EVP_DecryptInit');
@EVP_DecryptInit_ex:= LoadFunctionCLib('EVP_DecryptInit_ex');
@EVP_DecryptUpdate:= LoadFunctionCLib('EVP_DecryptUpdate');
@EVP_DecryptFinal:= LoadFunctionCLib('EVP_DecryptFinal',False);
if (Not Assigned(@EVP_DecryptFinal)) then
EVP_DecryptFinal:= LoadFunctionCLib('EVP_DecryptFinal_ex');
@EVP_EncryptInit:= LoadFunctionCLib('EVP_EncryptInit');
@EVP_EncryptInit_ex:= LoadFunctionCLib('EVP_EncryptInit_ex');
@EVP_EncryptUpdate:= LoadFunctionCLib('EVP_EncryptUpdate');
@EVP_EncryptFinal_ex:= LoadFunctionCLib('EVP_EncryptFinal_ex');
@EVP_EncryptFinal:= LoadFunctionCLib('EVP_EncryptFinal',False);
if (Not Assigned(@EVP_DecryptFinal)) then
EVP_EncryptFinal:=EVP_EncryptFinal_ex;
@EVP_CIPHER_CTX_block_size:= LoadFunctionCLib('EVP_CIPHER_CTX_block_size');
@EVP_md5:= LoadFunctionCLib('EVP_md5');
@EVP_CIPHER_key_length:= LoadFunctionCLib('EVP_CIPHER_key_length');
@EVP_CIPHER_block_size:= LoadFunctionCLib('EVP_CIPHER_block_size');
@EVP_MD_size:= LoadFunctionCLib('EVP_MD_size');
@EVP_CIPHER_CTX_set_padding:= LoadFunctionCLib('EVP_CIPHER_CTX_set_padding');
@EVP_DecryptFinal_ex:= LoadFunctionCLib('EVP_DecryptFinal_ex');
@ECDH_compute_key:= LoadFunctionCLib('ECDH_compute_key');
{$IFDEF OpenSSL10}
@HMAC_CTX_init:= LoadFunctionCLib('HMAC_CTX_init');
@HMAC_CTX_cleanup:= LoadFunctionCLib('HMAC_CTX_cleanup');
{$ELSE}
@HMAC_CTX_new:= LoadFunctionCLib('HMAC_CTX_new');
@HMAC_CTX_free:= LoadFunctionCLib('HMAC_CTX_free');
{$ENDIF}
@HMAC_Init:= LoadFunctionCLib('HMAC_Init');
@HMAC_Init_ex:= LoadFunctionCLib('HMAC_Init_ex');
@HMAC_Update:= LoadFunctionCLib('HMAC_Update');
@HMAC_Final:= LoadFunctionCLib('HMAC_Final');
@HMAC:= LoadFunctionCLib('HMAC');
@HMAC_CTX_copy:= LoadFunctionCLib('HMAC_CTX_copy');
@CRYPTO_free := LoadFunctionCLib('CRYPTO_free',False);
if (Not Assigned(@CRYPTO_free)) then
@CRYPTO_free := LoadFunctionCLib('OPENSSL_free',False);
end;
End;
function BN_num_bytes(a: PBIGNUM): TC_INT;
begin
Result := (BN_num_bits(a)+7) div 8;
end;
procedure OpenSSL_free(ptr: Pointer);
begin
if @CRYPTO_Free <> nil then begin
CRYPTO_free(ptr);
end;
end;
function CaptureLastSSLError : String;
begin
{$IFDEF NO_ANSISTRING}
Result := UBaseTypes.StrPas(ERR_error_string(ERR_get_error(),nil));
{$ELSE}
Result := ERR_error_string(ERR_get_error(),nil);
{$ENDIF}
end;
initialization
finalization
if hCrypt <> 0 then begin
FreeLibrary(hCrypt);
end;
end.