The term bulletproof vest is identified in base64 scheme by the sequence YnVsbGV0cHJvb2YgdmVzdA==, while the MD5 signature is equal to 4def0a1c71a54faeb6e67ea9158c125f. The ASCII encoding of bulletproof vest in hexadecimal notation is 62756c6c657470726f6f662076657374.