Update MASTG-TEST-0210 with Blowfish and third-party or custom implementations

[cpholguera]

This pull request updates MASTG-TEST-0210.

Overview

• Added algorithm examples for CommonCrypto: Added kCCAlgorithmBlowfish to the list of supported algorithms for the CCCrypt function. Clarified that the alg parameter uses constants from the CCAlgorithm enumeration.
• Third-party library considerations: Documented the potential use of weak encryption algorithms in third-party libraries (e.g., OpenSSL, BoringSSL, Libsodium) and custom implementations.

Evaluation

• Additional weak algorithm: Included Blowfish in the list of weak encryption algorithms that cause the test case to fail.
• Broader applicability: Extended the scope of the test case to include weak algorithms used in Apple APIs, third-party libraries, and custom cryptographic routines, with examples of insecure configurations (e.g., ECB mode, short key sizes).

[Copilot]

Pull Request Overview

This PR enhances the MASTG-TEST-0210 documentation by adding Blowfish to both the CommonCrypto example and the list of weak algorithms, and by highlighting third-party or custom crypto implementations.

• Added kCCAlgorithmBlowfish to the CommonCrypto CCCrypt algorithm list
• Clarified CryptoKit supported algorithms wording
• Documented third-party/custom library considerations and updated the failure list to include Blowfish

Comments suppressed due to low confidence (1)

tests-beta/ios/MASVS-CRYPTO/MASTG-TEST-0210.md:46

• [nitpick] This paragraph largely duplicates the third-party library bullet above. Consider merging or rephrasing to avoid redundancy, and add a period at the end for consistency.

This applies to Apple-provided APIs (e.g., CommonCrypto), third-party libraries (e.g., OpenSSL, Libsodium) and any custom implementations of cryptographic routines that replicate insecure algorithms (e.g., DES in C code) or use insecure configurations (e.g., ECB mode, short key sizes)