Method of providing text representation of a cryptographic value
AssigneeCerticom Corp.
InventorsScott A. Vanstone, Daniel R. Brown
Life of this patent
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Abstract
A method of representing crytographic values in text form is described. The text representation is formed from words selected from a vocabulary, which may include a collection of pseudowords. The text representations can be further transformed to a paragraph in an apparently grammatically correct form.
Claims18
A method of communicating a cryptographic value to a human user, said method comprising:
- selecting a vocabulary;
- representing the cryptographic value as a bit string;
- converting the bit string to a text using words selected from said vocabulary in accordance with a pre-determined loss-less relationship;
- and
- communicating the text to the human user.
A method of communicating a public key of a recipient to users of an identity-based encryption (“IBE”) system, said method comprising:
- selecting a vocabulary;
- representing the public key as a bit string;
- encoding the bit string to a text following a reverse arithmetic encoding algorithm utilizing words selected from the vocabulary;
- and
- communicating the text to the recipient as an identity of the recipient.
A method of communicating a cryptographic value to a user, said method comprising:
- selecting a vocabulary;
- representing the cryptographic value as a bit string;
- converting the bit string to grammatically correct text formed of words selected from said vocabulary;
- and
- communicating said grammatically correct text to said user.
A method of transmitting an encrypted message, comprising the steps of:
- selecting a vocabulary;
- representing the encrypted message as a bit string;
- converting the bit string to grammatically correct text formed of words selected from said vocabulary;
- selecting an embedding text;
- embedding said covertext in said embedding text to generate a steganographic message;
- and
- transmitting said steganographic message containing said covertext.
Dependencies are inferred from the claim text.