000034200 - Importing an SSL console certificat | RSA Link
Implementing RSA-SHA1 signature algorithm in Java The RSA-SHA1 signature method uses the RSASSA-PKCS1-v1_5 signature algorithm as defined in [RFC3447] (Jonsson, J. and B. Kaliski, “Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography; Specifications Version 2.1,” .) section 8.2 (more simply known as PKCS#1), using SHA-1 as the hash function for EMSA-PKCS1-v1_5. Cryptography | Android Developers Jun 22, 2020 SHA-1 SSL Certificates
The SHA1 hash function is now completely unsafe Researchers have achieved the first practical SHA-1 collision, generating two PDF files with the same signature. By Lucian Constantin.
> 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 Supported Standards — Acrobat DC Digital Signatures Guide RSA up to 4096-bit and DSA SHA1 up to 4096-bit. DSA only supports SHA1 and adbe.pkcs7.detached. RSA supports all algorithms and signature types (subFilter values). 7.x. PDF 1.6. RSA up to 4096-bit and DSA SHA1 up to 4096-bit. DSA only supports SHA1 and adbe.pkcs7.detached. RSA supports all algorithms and signature types (subFilter values). 6.x RSA_SHA1 - Free download and software reviews - CNET
So signing using RSA with a key size of 2048 with a SHA-1 hash over the content should be regarded secure just like HMAC-SHA-1, correct? The practical answer is: No, this is still insecure with all deployed RSA-based signature schemes. If you're just asking about using existing tools to make RSA-based signatures, stop here: SHA-1 is bad news, and don't touch it.
Sep 09, 2014 All about SHA1, SHA2 and SHA256 hash algorithms