Delphi import unit per OpenSSL DLL

RSA+MD5 signature

A nice contribute by Dim (Russia)

Require libeay32.pas, v. >= 0.7

// Equivalent to://   openssl dgst -md5 -sign private.pem -hex -out test.hex <>< b="">function Sign_RSA_MD5(privatekey,msg: string): string;varLen: cardinal;mdctx: EVP_MD_CTX;inbuf, outbuf: array [0..1023] of char;key: pEVP_PKEY;beginStrPCopy(inbuf, msg);InitOpenSSL;key:=ReadPrivateKey(privatekey);EVP_SignInit(@mdctx, EVP_md5());EVP_SignUpdate(@mdctx, @inbuf, StrLen(inbuf));EVP_SignFinal(@mdctx, @outbuf, Len, key);FreeOpenSSL;BinToHex(outbuf, inbuf,Len);inbuf[2*Len]:=#0;result := StrPas(inbuf);end;<>