Make RSA PrivateKey conversion symmetric (#70) #126

Job	Run time
no_std (1.65.0, thumbv7em-none-eabi)	1m 35s
no_std (1.65.0, wasm32-unknown-unknown)	1m 34s
test (1.65.0)	1m 37s
no_std (stable, thumbv7em-none-eabi)	20s
test (1.65.0, crypto)	1m 54s
no_std (stable, wasm32-unknown-unknown)	15s
test (1.65.0, p256)	1m 40s
test (1.65.0, p384)	1m 41s
test (1.65.0, rsa)	1m 44s
test (1.65.0, url)	1m 43s
test (1.65.0, p256,p384,rsa,url)	1m 53s
test (1.65.0, p256,p384)	1m 42s
test (1.65.0, p256,rsa)	1m 49s
test (1.65.0, p384,p256)	1m 42s
test (1.65.0, p384,rsa)	1m 51s
test (1.65.0, rsa,p256)	1m 48s
test (1.65.0, rsa,p384)	1m 51s
test (stable)	30s
test (stable, crypto)	31s
test (stable, p256)	25s
test (stable, p384)	22s
test (stable, rsa)	24s
test (stable, url)	26s
test (stable, p256,p384,rsa,url)	32s
test (stable, p256,p384)	21s
test (stable, p256,rsa)	25s
test (stable, p384,p256)	27s
test (stable, p384,rsa)	30s
test (stable, rsa,p256)	24s
test (stable, rsa,p384)	27s
minimal-versions / minimal-versions	40s
	33m 3s

Provide feedback