does not reveal any information about the identity of the recipient.
The decryption algorithm takes public key PK, ciphertext
C, and user secret key S[K.
Decrypt: Let C = <U, V> [member of] C be a ciphertext
encrypted with the identity ID.
Stage 1: To generate a sequence of ciphertext
pairs that encodes a random permutation of all parties' amounts of wealth and indices.
Finally, the ciphertext
in Through the Looking Glass is the story itself.
(data in encrypted form) bears roughly the same resemblance to plaintext (data in its original form) as a hamburger does to a T-bone steak.
Hence, the ciphertext
is the message "IP" (note that I = 8 and P = 15 in numerical form).
Baconian Cipher Key Plaintext Ciphertext
A BBABB B BABBB C BBBAA D BBABA E BABBA F BABAB G BAABB H BBAAA I BABAA J BAAAA K AAAAB L AAABA M AABAA N ABAAA O AAABB P AABAB Q ABAAB R ABABA S ABBAA T AABBB U ABABB V ABBAB W ABBBA X ABBBB Y BBBBA Z BBBAB
At the end of the day, all DRM systems share a common vulnerability: they provide their attackers with ciphertext
, the cipher and the key.
Encryption--Cryptographic conversion of data into ciphertext
in order to prevent any but the intended recipient from reading that data.
6) Encryption involves the translation of data into a form of secret code called ciphertext
Because so much of the information transmitted by e-business is private or sensitive, companies often use data encryption techniques to transform plaintext messages into ciphertext