Apparatus and method for processing authentication information
Provided is an information processing apparatus including a physical unclonable function (PUF) to generate a unique key using a process variation in a semiconductor manufacturing process, and an encryption unit to encrypt a password and/or bio-information received from a user using the unique key.
1. An information processing apparatus comprising:
a physical unclonable function (PUF) to generate at least one unique key using whether a short or open occurs between nodes generated on a semiconductor element by a process variation in a semiconductor manufacturing process; and
an encryption processor to encrypt received data using the unique key to store the data encrypted.
2. The information processing apparatus of claim 1 , wherein the PUF generates the unique key using whether an interlayer contact formed between conductive layers of a semiconductor short-circuits the conductive layers.
3. The information processing apparatus of claim 2 , wherein the interlayer contact formed between the conductive layers of the semiconductor is formed to have a smaller size than that according to the design rule provided in the semiconductor manufacturing process.
4. The information processing apparatus of claim 2 , wherein the PUF is configured to set the size of the interlayer contact formed between the conductive layers of the semiconductor such that a difference between a probability of the interlayer contact short-circuiting the conductive layers and a probability of the interlayer contact not short-circuiting the conductive layers is within a preset error range.
5. The information processing apparatus of claim 1 , wherein the PUF comprises N unit structures to generate a 1-bit digital value using a pair of conductive layers and one interlayer contact connecting the conductive layers and generates N-bit unique keys through the N unit structures, N being a natural number.
6. The information processing apparatus of claim 5 , wherein the PUF generates N-bit digital values, and the information processing apparatus groups digital values comprised in the N-bit unique keys by k units, compares a first group with a second group among a plurality of groups, and determines a digital value representing the first group and the second group as 1 when a value of k digital bits comprised in the first group is greater than a value of k digital bits comprised in the second group, k being a natural number.
7. The information processing apparatus of claim 6 , wherein the information processing apparatus selectively determines the digital value representing the first group and the second group as either one of 1 and 0 or does not determine the digital value representing the first group and the second group based on a setting when the value of the k digital bits comprised in the first group is the same as the value of the k digital bits comprised in the second group.
8. The information processing apparatus of claim 1 , wherein the encryption unit encrypts the password N times using the unique key as a round key to generate the identification key, N being a natural number.
9. The information processing apparatus of claim 8 , wherein the encryption unit encrypts the password in accordance with an advanced encryption standard (AES) or a triple data encryption standard (T-DES) to generate the identification key.
10. The information processing apparatus of claim 1 , wherein the data comprising bio-information.
11. The information processing apparatus of claim 1 , wherein, the data comprising at least one of user-password and PIN (Personal Identification Number) for authentication.
12. An information processing apparatus comprising:
a physical unclonable function (PUF) embedded in the apparatus, to generate at least one unique key using whether a short or open occurs between nodes generated on a semiconductor element by a process variation in a semiconductor manufacturing process; and
an encryption processor to encrypt received data using the unique key to store the data encrypted.
13. The information processing apparatus of claim 12 , wherein the PUF generates the unique key using whether an interlayer contact formed between conductive layers of a semiconductor short-circuits the conductive layers.
14. The information processing apparatus of claim 13 , wherein the interlayer contact formed between the conductive layers of the semiconductor is formed to have a smaller size than that according to the design rule provided in the semiconductor manufacturing process.
15. The information processing apparatus of claim 12 , wherein the data comprising bio-information.
16. The information processing apparatus of claim 12 , wherein, the data comprising at least one of user-password and PIN (Personal Identification Number) for authentication.
17. An information processing method comprising:
generating, by a physical unclonable function (PUF) of an information processing apparatus, at least one unique key using whether a short or open occurs between nodes generated on a semiconductor element by a process variation in a semiconductor manufacturing process; and
encrypting, by an encryption processor of the apparatus, received data using the unique key.
18. The information processing method of claim 17 , wherein the data comprising at least one of a user-password, PIN (Personal Identification Number), and bio-information input to the apparatus.