ENH: Expose /Perms verification result on Encryption object #7876

Job	Run time
Build & verify package	16s
pytest on macOS	2m 42s
pytest on pypy3.11 (crypto-lib: cryptography)	3m 25s
pytest on 3.13 (crypto-lib: cryptography)	6m 7s
pytest on 3.10 (crypto-lib: cryptography)	14m 33s
pytest on windows	3m 24s
pytest on 3.12 (crypto-lib: cryptography)	6m 50s
pytest on 3.11 (crypto-lib: cryptography)	5m 46s
pytest on 3.9 (crypto-lib: pycryptodome)	5m 23s
pytest on 3.9 (crypto-lib: none)	6m 4s
pytest on 3.9 (crypto-lib: cryptography)	6m 12s
pytest on 3.14 (crypto-lib: cryptography)	2m 40s
Check code style issues	1m 39s
Combine & check coverage.	26s
	1h 5m 27s

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