does kSecKeyAlgorithmRSAEncryptionOAEPSHA1 use MGF1 padding?

in regards to padding, the documentation in the headers for the encryption cipher kSecKeyAlgorithmRSAEncryptionOAEPSHA1 declares that

data is padded using OAEP padding scheme internally using SHA1.

is it a secret which masking generator the OAEP is using? I need to be able to convey to our architects whether or not the iOS encryption is using MGF1.
so: Is it?

Thanks in advance,

|K<

Kent Clelland

does kSecKeyAlgorithmRSAEncryptionOAEPSHA1 use MGF1 padding?
 
 
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