History: enc_rsa

This page describes all changes made to the enc_rsa package, RSA Signature Algorithm, since its release.

Version

2.7 (2021-07-09, 11:00):

• Typos fixed.

2.6 (2021-06-15, 13:33)

• Secured RSA encryption/decryption for using too large a key.
• Added missing init function for RSA RAW tests.

2.5 (2020-10-14, 11:00)

• Added RSA PSS driver support for TLS 1.3.

2.4 (2020-06-17, 13:45):

• Corrected RSA CRT algorithm for trying to subtract too big a value.
• Private buffer length is now calculated to be multiple of 4.

2.3 (2020-04-16, 7:30):

• Corrected clearing of padding bytes when calculated signature length is less than key length.

2.2r2 (2018-08-29, 18:31):

• Document HTML link added to the documentation folder.
• History and document files renamed to the package name.

2.02 (2018-01-31, 15:00):

• Added RSA test suite (moved from enc_test).
• Added missing variable casting.

2.01:

• Corrected compilation warnings: potentially uninitialized local variable.

2.0:

• Added New RSA padding type that is configurable by cypher data.

1.11:

• Corrected output buffer length checking.

1.10:

• Added RSA CRT algorithm (RFC 2437 chapter 5.2.1). It is used when a key with CRT data is provided.

1.9:

• Corrected parsing of RSA key.
• Compilation error is raised when RSA_MAX_PUB_KEY_LEN has an invalid value.

1.8:

• Moved macro RSA_MAX_PUB_KEY_LEN to configuration file. Now user is able to define maximum size of RSA key.

1.7:

• Added OID defines for RSA with SHA and RSA with SHA256.
• Removed mutex clearing during initialization that can cause compile error on OS.

1.6:

• Corrected: encrypted message length is equal to key modulus m length (RFC 2437, 7.1.1).
• Removed comparing of big number size in rsa_calc() (big number library now handles all cases).

1.5:

• Corrected: random bytes that are added to the padding must be non 0.

1.4:

• Corrected writing over boundaries.
• Corrected output buffer length checking.

1.3:

• Code Review.
• Big number related changes.

1.2:

• Changes to make module work in Big Endian architecture.

1.1:

• Code review (changed u to U).
• Changed version number to match new enc_base package.
• Added setting of bn_buf_len for big numbers.

1.0:

• Initial release.