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US 11,637,690 B1Granted
Format preserving encryption (FPE) system and method for long strings
AssigneeBaffle, Inc.
InventorsMihir Bellare, Priyadarshan Kolte
Life of this patent
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Abstract
A format-preserving Just Encrypt 1 (JE1) system and method provides significant performance advantages over known FPE methods for longer character strings due to the technical improvements.
Claims36
A format-preserving encryption method, comprising:
- receiving a plaintext message having a predetermined number of characters;
- performing format-preserving encryption on the plaintext message to generate ciphertext, wherein a format and a length of the plaintext message is the same as a format and a length of the ciphertext;
- and
- wherein performing the format-preserving encryption on the plaintext message further comprises invoking an advanced encryption standard (AES) block cipher operation less than 10 times for each 256 bits of the plaintext message.
1 more element
A format-preserving encryption apparatus, comprising:
- a computer system having a processor that executes a plurality of lines of instructions so that the processor is configured to:
- receive a plaintext message having a predetermined number of characters;
- perform format-preserving encryption on the plaintext message to generate ciphertext, wherein a format and a length of the plaintext message is the same as a format and a length of the ciphertext;
- and
- wherein the format-preserving encryption on the plaintext message is performed by invoking an advanced encryption standard (AES) block cipher operation less than 10 times for each 256 bits of the plaintext message.
2 more elements
A format-preserving decryption method, comprising:
- receiving a ciphertext having a predetermined number of characters;
- performing format-preserving decryption on the plaintext message to generate plaintext, wherein a format and a length of the ciphertext is the same as a format and a length of the plaintext;
- and
- wherein performing the format-preserving decryption on the ciphertext further comprises invoking an advanced encryption standard (AES) block cipher operation less than 10 times for each 256 bits of the ciphertext.
1 more element
A format-preserving decryption apparatus, comprising:
- a computer system having a processor that executes a plurality of lines of instructions so that the processor is configured to:
- receive a ciphertext having a predetermined number of characters;
- perform format-preserving decryption on the plaintext message to generate plaintext, wherein a format and a length of the ciphertext is the same as a format and a length of the plaintext;
- and
- wherein the format-preserving decryption on the ciphertext invokes an advanced encryption standard (AES) block cipher operation less than 10 times for each 256 bits of the ciphertext.
2 more elements
Dependencies are inferred from the claim text.