FIPS 186

FIPS 186
Title	FIPS 186
Abbreviation	FIPS 186
Status	Published
Organization	National Institute of Standards and Technology
Related	Digital Signature Algorithm, RSA, Elliptic Curve Cryptography

FIPS 186 is a United States NIST standard for digital signatures, which was first published in 1994 by the National Institute of Standards and Technology in collaboration with the National Security Agency. The standard is based on the Digital Signature Algorithm developed by the National Security Agency and is used to ensure the authenticity and integrity of digital data, such as documents and messages, by using public-key cryptography techniques like RSA and Elliptic Curve Cryptography. The development of FIPS 186 involved the work of several notable cryptographers, including Adi Shamir, Ron Rivest, and Len Adleman, who are also known for their contributions to the RSA algorithm. The standard has undergone several revisions, with the most recent version being FIPS 186-4, which was published in 2013 and includes updates on key management and hash functions like SHA-256.

Introduction to FIPS 186

FIPS 186 is a critical standard for ensuring the security and authenticity of digital data, and its development involved the collaboration of several organizations, including the National Institute of Standards and Technology, the National Security Agency, and the American National Standards Institute. The standard is widely used in various industries, including finance, healthcare, and government, to protect sensitive information and prevent cyber attacks like phishing and malware. The use of FIPS 186 is mandated by several United States government agencies, including the National Security Agency and the Department of Defense, which also rely on other standards like FIPS 140-2 and NIST Special Publication 800-53. The standard is also recognized by international organizations, such as the International Organization for Standardization and the Institute of Electrical and Electronics Engineers, which have developed similar standards like ISO/IEC 9796 and IEEE P1363.

Background and History

The development of FIPS 186 began in the late 1980s, when the National Institute of Standards and Technology and the National Security Agency started working on a standard for digital signatures, which would provide a secure way to authenticate digital data and prevent tampering and eavesdropping. The first version of the standard, FIPS 186-1, was published in 1994 and was based on the Digital Signature Algorithm developed by the National Security Agency. The standard has undergone several revisions since then, with the most recent version being FIPS 186-4, which was published in 2013 and includes updates on key management and hash functions like SHA-256 and SHA-3. The development of FIPS 186 involved the work of several notable cryptographers, including Adi Shamir, Ron Rivest, and Len Adleman, who are also known for their contributions to the RSA algorithm and other cryptographic techniques like Diffie-Hellman key exchange.

Digital Signature Standard

The Digital Signature Standard (DSS) is a critical component of FIPS 186, which provides a secure way to authenticate digital data and prevent tampering and eavesdropping. The DSS is based on the Digital Signature Algorithm developed by the National Security Agency and uses public-key cryptography techniques like RSA and Elliptic Curve Cryptography to ensure the authenticity and integrity of digital data. The DSS is widely used in various industries, including finance, healthcare, and government, to protect sensitive information and prevent cyber attacks like phishing and malware. The use of the DSS is mandated by several United States government agencies, including the National Security Agency and the Department of Defense, which also rely on other standards like FIPS 140-2 and NIST Special Publication 800-53. The DSS is also recognized by international organizations, such as the International Organization for Standardization and the Institute of Electrical and Electronics Engineers, which have developed similar standards like ISO/IEC 9796 and IEEE P1363.

Key Sizes and Security

The security of FIPS 186 depends on the size of the public key used in the Digital Signature Algorithm, which is typically measured in bits, such as 1024-bit or 2048-bit. The larger the key size, the more secure the digital signature, but the slower the signature generation and verification process, which can be improved using techniques like elliptic curve cryptography and hash functions like SHA-256. The standard recommends the use of key sizes that are at least 1024 bits, but larger key sizes, such as 2048 bits or 3072 bits, are recommended for higher security applications, such as online banking and electronic commerce, which also rely on other security protocols like SSL/TLS and IPsec. The security of FIPS 186 also depends on the quality of the random number generator used to generate the public key, which can be improved using techniques like fortuna PRNG and Yarrow-Ulam PRNG. The standard recommends the use of a secure random number generator that is designed to produce unpredictable and uniformly distributed random numbers, such as the Fortuna PRNG developed by Niels Ferguson and Bruce Schneier.

Implementation and Validation

The implementation of FIPS 186 requires careful attention to detail to ensure that the digital signature is secure and reliable, which can be achieved using programming languages like C++ and Java. The standard provides a set of guidelines and recommendations for implementing the Digital Signature Algorithm, including the use of secure random number generators and hash functions like SHA-256 and SHA-3. The validation of FIPS 186 involves testing the implementation to ensure that it meets the requirements of the standard, which can be done using testing frameworks like NIST Statistical Test Suite and Diehard tests. The validation process involves testing the digital signature algorithm, the public key generation, and the hash function used in the algorithm, which can be improved using techniques like code review and penetration testing. The standard recommends the use of a secure implementation that is designed to prevent side-channel attacks and timing attacks, such as the AES implementation developed by Vincent Rijmen and Joan Daemen.

Cryptographic Techniques

FIPS 186 uses several cryptographic techniques to ensure the security and authenticity of digital data, including public-key cryptography and hash functions like SHA-256 and SHA-3. The standard recommends the use of secure random number generators and key management techniques, such as key exchange and key storage, which can be improved using techniques like elliptic curve cryptography and quantum cryptography. The standard also recommends the use of secure hash functions that are designed to produce a fixed-size string of characters that is unique to the input data, such as the SHA-256 hash function developed by National Security Agency. The use of FIPS 186 is widely recognized by international organizations, such as the International Organization for Standardization and the Institute of Electrical and Electronics Engineers, which have developed similar standards like ISO/IEC 9796 and IEEE P1363. The standard is also used in various industries, including finance, healthcare, and government, to protect sensitive information and prevent cyber attacks like phishing and malware, which can be improved using security protocols like SSL/TLS and IPsec.

Category:Cryptography standards