SHA1(abc)=A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
SHA1(abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq)=84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
SHA1(aaaaaaaaaaaaaaaaaaaa...)=34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
