Returns a (possibly empty) collection view of the certificates read
from the given input stream {@code inStream}.
<p>In order to take advantage of the specialized certificate format
supported by this certificate factory, each element in
the returned collection view can be typecast to the corresponding
certificate class. For example, if this certificate
factory implements X.509 certificates, the elements in the returned
collection can be typecast to the {@code X509Certificate} class.
<p>In the case of a certificate factory for X.509 certificates,
{@code inStream} may contain a sequence of DER-encoded certificates
in the formats described for
{@link #generateCertificate(java.io.InputStream) generateCertificate}.
In addition, {@code inStream} may contain a PKCS#7 certificate
chain. This is a PKCS#7 <i>SignedData</i> object, with the only
significant field being <i>certificates</i>. In particular, the
signature and the contents are ignored. This format allows multiple
certificates to be downloaded at once. If no certificates are present,
an empty collection is returned.
<p>Note that if the given input stream does not support
{@link java.io.InputStream#mark(int) mark} and
{@link java.io.InputStream#reset() reset}, this method will
consume the entire input stream.
@param inStream the input stream with the certificates.
@return a (possibly empty) collection view of
java.security.cert.Certificate objects
initialized with the data from the input stream.
@exception CertificateException on parsing errors.
Returns a (possibly empty) collection view of the certificates read from the given input stream {@code inStream}.
<p>In order to take advantage of the specialized certificate format supported by this certificate factory, each element in the returned collection view can be typecast to the corresponding certificate class. For example, if this certificate factory implements X.509 certificates, the elements in the returned collection can be typecast to the {@code X509Certificate} class.
<p>In the case of a certificate factory for X.509 certificates, {@code inStream} may contain a sequence of DER-encoded certificates in the formats described for {@link #generateCertificate(java.io.InputStream) generateCertificate}. In addition, {@code inStream} may contain a PKCS#7 certificate chain. This is a PKCS#7 <i>SignedData</i> object, with the only significant field being <i>certificates</i>. In particular, the signature and the contents are ignored. This format allows multiple certificates to be downloaded at once. If no certificates are present, an empty collection is returned.
<p>Note that if the given input stream does not support {@link java.io.InputStream#mark(int) mark} and {@link java.io.InputStream#reset() reset}, this method will consume the entire input stream.
@param inStream the input stream with the certificates.
@return a (possibly empty) collection view of java.security.cert.Certificate objects initialized with the data from the input stream.
@exception CertificateException on parsing errors.