The term traveller's letter of credit is identified in base64 scheme by the sequence dHJhdmVsbGVyJ3MgbGV0dGVyIG9mIGNyZWRpdA==, while the MD5 signature is equal to c436a108357b45bff8b0f764ce448ca2. The ASCII encoding of traveller's letter of credit in hexadecimal notation is 74726176656c6c65722773206c6574746572206f6620637265646974.