Object
static VALUE ossl_cipher_initialize(VALUE self, VALUE str) { EVP_CIPHER_CTX *ctx; const EVP_CIPHER *cipher; char *name; name = StringValuePtr(str); GetCipher(self, ctx); if (!(cipher = EVP_get_cipherbyname(name))) { ossl_raise(rb_eRuntimeError, "unsupported cipher algorithm (%s)", name); } if (EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, -1) != 1) ossl_raise(eCipherError, NULL); return self; }
static VALUE ossl_cipher_update_deprecated(VALUE self, VALUE data) { char *cname; cname = rb_class2name(rb_obj_class(self)); rb_warning("%s#<< is deprecated; use %s#update instead", cname, cname); return ossl_cipher_update(self, data); }
static VALUE ossl_cipher_decrypt(int argc, VALUE *argv, VALUE self) { return ossl_cipher_init(argc, argv, self, 0); }
static VALUE ossl_cipher_encrypt(int argc, VALUE *argv, VALUE self) { return ossl_cipher_init(argc, argv, self, 1); }
static VALUE ossl_cipher_final(VALUE self) { EVP_CIPHER_CTX *ctx; int out_len; VALUE str; GetCipher(self, ctx); str = rb_str_new(0, EVP_CIPHER_CTX_block_size(ctx)); if (!EVP_CipherFinal_ex(ctx, RSTRING(str)->ptr, &out_len)) ossl_raise(eCipherError, NULL); assert(out_len <= RSTRING(str)->len); RSTRING(str)->len = out_len; RSTRING(str)->ptr[out_len] = 0; return str; }
static VALUE ossl_cipher_set_iv(VALUE self, VALUE iv) { EVP_CIPHER_CTX *ctx; StringValue(iv); GetCipher(self, ctx); if (RSTRING(iv)->len < EVP_CIPHER_CTX_iv_length(ctx)) ossl_raise(eCipherError, "iv length too short"); if (EVP_CipherInit_ex(ctx, NULL, NULL, NULL, RSTRING(iv)->ptr, -1) != 1) ossl_raise(eCipherError, NULL); return iv; }
static VALUE ossl_cipher_set_key(VALUE self, VALUE key) { EVP_CIPHER_CTX *ctx; StringValue(key); GetCipher(self, ctx); if (RSTRING(key)->len < EVP_CIPHER_CTX_key_length(ctx)) ossl_raise(eCipherError, "key length too short"); if (EVP_CipherInit_ex(ctx, NULL, NULL, RSTRING(key)->ptr, NULL, -1) != 1) ossl_raise(eCipherError, NULL); return key; }
static VALUE ossl_cipher_set_key_length(VALUE self, VALUE key_length) { EVP_CIPHER_CTX *ctx; int len = NUM2INT(key_length); GetCipher(self, ctx); if (EVP_CIPHER_CTX_set_key_length(ctx, len) != 1) ossl_raise(eCipherError, NULL); return key_length; }
static VALUE ossl_cipher_name(VALUE self) { EVP_CIPHER_CTX *ctx; GetCipher(self, ctx); return rb_str_new2(EVP_CIPHER_name(EVP_CIPHER_CTX_cipher(ctx))); }
static VALUE ossl_cipher_set_padding(VALUE self, VALUE padding) { #if defined(HAVE_EVP_CIPHER_CTX_SET_PADDING) EVP_CIPHER_CTX *ctx; int pad = NUM2INT(padding); GetCipher(self, ctx); if (EVP_CIPHER_CTX_set_padding(ctx, pad) != 1) ossl_raise(eCipherError, NULL); #else rb_notimplement(); #endif return padding; }
static VALUE ossl_cipher_pkcs5_keyivgen(int argc, VALUE *argv, VALUE self) { EVP_CIPHER_CTX *ctx; const EVP_MD *digest; VALUE vpass, vsalt, viter, vdigest; unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH], *salt = NULL; int iter; rb_scan_args(argc, argv, "13", &vpass, &vsalt, &viter, &vdigest); StringValue(vpass); if(!NIL_P(vsalt)){ StringValue(vsalt); if(RSTRING(vsalt)->len != PKCS5_SALT_LEN) rb_raise(eCipherError, "salt must be an 8-octet string"); salt = RSTRING(vsalt)->ptr; } iter = NIL_P(viter) ? 2048 : NUM2INT(viter); digest = NIL_P(vdigest) ? EVP_md5() : GetDigestPtr(vdigest); GetCipher(self, ctx); EVP_BytesToKey(EVP_CIPHER_CTX_cipher(ctx), digest, salt, RSTRING(vpass)->ptr, RSTRING(vpass)->len, iter, key, iv); if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, -1) != 1) ossl_raise(eCipherError, NULL); OPENSSL_cleanse(key, sizeof key); OPENSSL_cleanse(iv, sizeof iv); return Qnil; }
# File openssl/lib/openssl/cipher.rb, line 51 def random_iv str = OpenSSL::Random.random_bytes(self.iv_len) self.iv = str return str end
# File openssl/lib/openssl/cipher.rb, line 45 def random_key str = OpenSSL::Random.random_bytes(self.key_len) self.key = str return str end
static VALUE ossl_cipher_reset(VALUE self) { EVP_CIPHER_CTX *ctx; GetCipher(self, ctx); if (EVP_CipherInit_ex(ctx, NULL, NULL, NULL, NULL, -1) != 1) ossl_raise(eCipherError, NULL); return self; }
static VALUE ossl_cipher_update(VALUE self, VALUE data) { EVP_CIPHER_CTX *ctx; char *in; int in_len, out_len; VALUE str; StringValue(data); in = RSTRING(data)->ptr; if ((in_len = RSTRING(data)->len) == 0) rb_raise(rb_eArgError, "data must not be empty"); GetCipher(self, ctx); str = rb_str_new(0, in_len+EVP_CIPHER_CTX_block_size(ctx)); if (!EVP_CipherUpdate(ctx, RSTRING(str)->ptr, &out_len, in, in_len)) ossl_raise(eCipherError, NULL); assert(out_len < RSTRING(str)->len); RSTRING(str)->len = out_len; RSTRING(str)->ptr[out_len] = 0; return str; }