OpenVPN's default setting is SHA-1. SHA-1 is considered weak since 2005 and Microsoft has announced their deprecation policy for it. The SHA-2 set of hashing algorithms are considered stronger and one should use those in favour of SHA-1 whenever possible. Out of the other strong options, I've chosen SHA-256 for interoperability with OpenVPN-NL.

The tradeoff is that RSA is much slower than HMAC, but that doesn't always matter. Now, as I said, I know almost nothing about Salesforce, so I don't know if this was their thinking or not. But coming from a purely cryptographic POV, that would be the most logical explanation, I think. Dec 01, 2014 · Notes on Cryptography Ciphers: RSA, DSA, AES, RC4, ECC, ECDSA, SHA, and so on … by rakhesh is licensed under a Creative Commons Attribution 4.0 International License. Comments are disabled for this blog but please email me with any comments, feedback, corrections, etc. RSAES_OAEP_SHA_1: PKCS #1 v2.2, Section 7.1. RSA encryption with OAEP Padding using SHA-1 for both the hash and in the MGF1 mask generation function along with an empty label. RSAES_OAEP_SHA_256: PKCS #1, Section 7.1. SHA hashing algorithm. This algorithm is supported by the Microsoft Base Cryptographic Provider. CALG_SHA1: 0x00008004: Same as CALG_SHA. This algorithm is supported by the Microsoft Base Cryptographic Provider. CALG_SHA_256: 0x0000800c: 256 bit SHA hashing algorithm. This algorithm is supported by Microsoft Enhanced RSA and AES Cryptographic

Ciphers. With curl's options CURLOPT_SSL_CIPHER_LIST and --ciphers users can control which ciphers to consider when negotiating TLS connections. TLS 1.3 ciphers are supported since curl 7.61 for OpenSSL 1.1.1+ with options CURLOPT_TLS13_CIPHERS and --tls13-ciphers.If you are using a different SSL backend you can try setting TLS 1.3 cipher suites by using the respective regular cipher option.

> What is the difference between SHA-256, AES-256 and RSA-2048 bit encryptions? Suman Sastri has covered the theory, so I’ll just leave a couple of notes on actual usage. RSA-2048 is much slower than AES-256, so it’s generally used for encrypting Identity Management – Access Management – RSA Multi-factor authentication. RSA SecurID Access offers a broad range of authentication methods including modern mobile multi-factor authenticators (for example, push notification, one-time password, SMS and biometrics) as well as traditional hard and soft tokens for secure access to all applications, whether they live on premises or in the cloud. Cipher suite definitions - IBM

Signature (Java Card API, Classic Edition)

May 27, 2020 HMAC SHA256 vs RSA SHA256 - which one to use