Don't use ECB and PKCS#1V1.5

[cryptochecktool]

In the project’s encryption implementation, I noticed the use of ECB (Electronic Codebook) mode and PKCS#1 v1.5 padding scheme. Here are my concerns regarding these methods:

Issues with ECB mode:
ECB mode produces the same ciphertext for identical plaintext blocks, leading to risks of pattern recognition and data leakage.
It is not suitable for scenarios where there may be correlation or repetition between encrypted data blocks.
Issues with PKCS#1 v1.5:
PKCS#1 v1.5 padding scheme is vulnerable to timing attacks during the decryption process, which can allow an attacker to deduce information about the padding and potentially decrypt the message without the private key.