HMAC

The following functions perform HMAC calculations.

All of the hash functions take a key, along with arbitrary data, and turn binary data as `octet`s.

%hmac.md5(<shared_key>, <string>)

Generate HMAC-MD5 of string.

Example

string test1
string test2
octets output

test1 := "mykey"
test2 := "Caipirinha"
output := %hmac.md5(test1, test2)

reply += {
    Reply-Message = "The HMAC-MD5 of %{test1}%{test2} in octets is %{output}"
    Reply-Message = "The HMAC-MD5 of %{test1}%{test2} in hex is %hex(output)"
}

Output

The HMAC-MD5 of Caipirinha in octets is \317}\264@K\216\371\035\304\367\202,c\376\341\203
The HMAC-MD5 of Caipirinha in hex is 636f6e74726f6c3a546d702d4f63746574732d30

%hmac.sha1(<shared_key>, <string>)

Generate HMAC-SHA1 of string.

Example

string test1
string test2
octets output

test1 := "mykey"
test2 := "Caipirinha"
output := %hmac.sha1(test1, test2)

reply += {
    Reply-Message = "The HMAC-SHA1 of %{test1}%{test2} in octets is %{output}"
    Reply-Message = "The HMAC-SHA1 of %{test1}%{test2} in hex is %hex(output)"
}

Output

The HMAC-SHA1 of Caipirinha in octets is \311\007\212\234j\355\207\035\225\256\372ʙ>R\"\341\351O)
The HMAC-SHA1 of Caipirinha in hex is 636f6e74726f6c3a546d702d4f63746574732d30