Handle overlapping in/out buffers in crypto_sign()
crypto_sign(): read the copy, not the message, to properly handle overlaps
Add a test for crypto_sign() with overlapping buffers.
crypto_sign() test: explicitly initialize sig in case the previous tests failed.
lcov exclusions
Test generichash with no key, with salt or personalization
lcov exclusion
Testing for this case rather belongs to the sodium-validation project.
pickparams() and escrypt_init_local() cannot fail
Test pwhash with opslimit < 32768
escrypt_gensalt_r() cannot fail
lcov exclusions
lcov exclusions
Test crypto_hash() with an input longer than the block size
lcov exclusions
Test crypto_pwhash_scryptsalsa208sha256_str_verify() with invalid input.
lcov exclusion
lcov exclusion
Test password verification with an empty password
Update pwhash.exp for the new case that has to fail (empty password)
The test for pwhash is too slow for some systems.
Stop checking alterations for every single character.