Re: encryption question

Encryption:
Input: Password P, Text T
1. S := Random (128 bits from a secure PRBG)
2. KE := HMAC(P,S + 'E')
3. KA := HMAC(P,S + 'A')
4. C := E(KE,T)
5. M := HMAC(KA,C)
6. Output CT := S + C + M

Decryption:
Input: Password P, Cipher Text CT
1. Parse CT into S,C,M
2. KE := HMAC(P,S + 'E')
3. KA := HMAC(P,S + 'A')
4. if M <> HMAC(KA,C) return Error
5. T := D(KE,C)
6. Output T

Can you provide a "key" please :)

Rael


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