The term mortgage-backed security is identified in base64 scheme by the sequence bW9ydGdhZ2UtYmFja2VkIHNlY3VyaXR5, while the MD5 signature is equal to 40e3066e5aa81b67658e6d1dc1b0ce86. The ASCII encoding of mortgage-backed security in hexadecimal notation is 6d6f7274676167652d6261636b6564207365637572697479.