Add decrypt functions with uncompressed public key (f14617db) · Commits · ITS - Intelligent Transport Systems / ttcn / SEC TS 103 096-3

lib_system/LibItsSecurity_Functions.ttcn

+208 −131

Original line number	Diff line number	Diff line
		@@ -318,6 +318,9 @@ module LibItsSecurity_Functions {
		} else if (ischosen(v_recipientInfo.signedDataRecipInfo)) {
		v_pKRecipientInfo := p_encrypedSecuredMessage.content.encryptedData.recipients[0].signedDataRecipInfo;
		// Read the certificate based on the recipientId
		} else if (ischosen(v_recipientInfo.rekRecipInfo)) {
		v_pKRecipientInfo := p_encrypedSecuredMessage.content.encryptedData.recipients[0].rekRecipInfo;
		// No certificate based
		} else {
		log("* " & testcasename() & ":ERROR: Unsupported RecipientInfo variant *");
		return false;
		@@ -353,6 +356,18 @@ module LibItsSecurity_Functions {
		p_salt,
		p_aes_sym_enc_key
		);
		} else if (ischosen(v_pKRecipientInfo.encKey.eciesNistP256.v.uncompressedP256)) {
		v_decryptedSecuredMessage := f_decryptWithEciesNistp256WithSha256_1(
		v_ciphertext.aes128ccm.ccmCiphertext,
		p_encryptPrivateKey,
		v_pKRecipientInfo.encKey.eciesNistP256.v.uncompressedP256.x,
		v_pKRecipientInfo.encKey.eciesNistP256.v.uncompressedP256.y,
		v_pKRecipientInfo.encKey.eciesNistP256.c,
		v_pKRecipientInfo.encKey.eciesNistP256.t,
		v_ciphertext.aes128ccm.nonce,
		p_salt,
		p_aes_sym_enc_key
		);
		} else {
		log("* " & testcasename() & ":ERROR: Non canonical ephemeral encryption keys *");
		return false;
		@@ -390,6 +405,18 @@ module LibItsSecurity_Functions {
		p_salt,
		p_aes_sym_enc_key
		);
		} else if (ischosen(v_pKRecipientInfo.encKey.eciesBrainpoolP256r1.v.uncompressedP256)) {
		v_decryptedSecuredMessage := f_decryptWithEciesBrainpoolp256r1WithSha256_1(
		v_ciphertext.aes128ccm.ccmCiphertext,
		p_encryptPrivateKey,
		v_pKRecipientInfo.encKey.eciesBrainpoolP256r1.v.uncompressedP256.x,
		v_pKRecipientInfo.encKey.eciesBrainpoolP256r1.v.uncompressedP256.y,
		v_pKRecipientInfo.encKey.eciesBrainpoolP256r1.c,
		v_pKRecipientInfo.encKey.eciesBrainpoolP256r1.t,
		v_ciphertext.aes128ccm.nonce,
		p_salt,
		p_aes_sym_enc_key
		);
		} else {
		log("* " & testcasename() & ":ERROR: Non canonical ephemeral encryption keys *");
		return false;
		@@ -496,6 +523,30 @@ module LibItsSecurity_Functions {
		);
		} // End of function f_decryptWithEcdsaNistp256WithSha256

		function f_decryptWithEciesNistp256WithSha256_1(
		in octetstring p_encryptedSecuredMessage,
		in Oct32 p_privateEncKey,
		in Oct32 p_publicEphemeralKeyX,
		in Oct32 p_publicEphemeralKeyY,
		in Oct16 p_encrypted_sym_key,
		in Oct16 p_authentication_vector,
		in Oct12 p_nonce,
		in Oct32 p_salt,
		out Oct16 p_aes_sym_enc_key
		) return octetstring {
		return fx_decryptWithEciesNistp256WithSha256_1(
		p_encryptedSecuredMessage,
		p_privateEncKey,
		p_publicEphemeralKeyX,
		p_publicEphemeralKeyY,
		p_encrypted_sym_key,
		p_authentication_vector,
		p_nonce,
		p_salt,
		p_aes_sym_enc_key
		);
		} // End of function f_decryptWithEcdsaNistp256WithSha256_1

		/**
		* @desc Produces a Elliptic Curve Digital Encrytion Algorithm (ECIES) encryption using Brainpool-P256 algorithm
		* @param p_toBeEncryptedSecuredMessage The data to be encrypted
		@@ -574,6 +625,30 @@ module LibItsSecurity_Functions {
		);
		} // End of function f_decryptWithEcdsaBrainpoolp256r1WithSha256

		function f_decryptWithEciesBrainpoolp256r1WithSha256_1(
		in octetstring p_encryptedSecuredMessage,
		in Oct32 p_privateEncKey,
		in Oct32 p_publicEphemeralKeyX,
		in Oct32 p_publicEphemeralKeyY,
		in Oct16 p_encrypted_sym_key,
		in Oct16 p_authentication_vector,
		in Oct12 p_nonce,
		in Oct32 p_salt,
		out Oct16 p_aes_sym_enc_key
		) return octetstring {
		return fx_decryptWithEciesBrainpoolp256r1WithSha256_1(
		p_encryptedSecuredMessage,
		p_privateEncKey,
		p_publicEphemeralKeyX,
		p_publicEphemeralKeyY,
		p_encrypted_sym_key,
		p_authentication_vector,
		p_nonce,
		p_salt,
		p_aes_sym_enc_key
		);
		} // End of function f_decryptWithEcdsaBrainpoolp256r1WithSha256

		/**
		* @desc Produces a Elliptic Curve Digital Encrytion Algorithm (ECIES) encryption using Sm2-P256 algorithm
		* @param p_toBeEncryptedSecuredMessage The data to be encrypted
		@@ -3571,6 +3646,7 @@ module LibItsSecurity_Functions {
		* @return The decrypted message
		*/
		external function fx_decryptWithEciesNistp256WithSha256(in octetstring p_encryptedSecuredMessage, in Oct32 p_privateEncKey, in Oct32 p_publicEphemeralKeyCompressed, in integer p_ephemeralKeyModeCompressed, in Oct16 p_encrypted_sym_key, in Oct16 p_authentication_vector, in Oct12 p_nonce, in Oct32 p_salt, out Oct16 p_aes_sym_enc_key) return octetstring;
		external function fx_decryptWithEciesNistp256WithSha256_1(in octetstring p_encryptedSecuredMessage, in Oct32 p_privateEncKey, in Oct32 p_publicEphemeralKeyX, in Oct32 p_publicEphemeralKeyY, in Oct16 p_encrypted_sym_key, in Oct16 p_authentication_vector, in Oct12 p_nonce, in Oct32 p_salt, out Oct16 p_aes_sym_enc_key) return octetstring;

		/**
		* @desc Produces a Elliptic Curve Digital Encrytion Algorithm (ECIES) encryption using Brainpool-P256 algorithm
		@@ -3599,6 +3675,7 @@ module LibItsSecurity_Functions {
		* @return The decrypted message
		*/
		external function fx_decryptWithEciesBrainpoolp256r1WithSha256(in octetstring p_encryptedSecuredMessage, in Oct32 p_privateEncKey, in Oct32 p_publicEphemeralKeyCompressed, in integer p_ephemeralKeyModeCompressed, in Oct16 p_encrypted_sym_key, in Oct16 p_authentication_vector, in Oct12 p_nonce, in Oct32 p_salt, out Oct16 p_aes_sym_enc_key) return octetstring;
		external function fx_decryptWithEciesBrainpoolp256r1WithSha256_1(in octetstring p_encryptedSecuredMessage, in Oct32 p_privateEncKey, in Oct32 p_publicEphemeralKeyX, in Oct32 p_publicEphemeralKeyY, in Oct16 p_encrypted_sym_key, in Oct16 p_authentication_vector, in Oct12 p_nonce, in Oct32 p_salt, out Oct16 p_aes_sym_enc_key) return octetstring;

		/**
		* @desc Produces a Elliptic Curve Digital Encrytion Algorithm (ECIES) encryption using Sm2-P256 algorithm