Examples of codec.pkcs7.ContentInfo

org.apache.harmony.security.pkcs7.ContentInfo
sa.com/rsalabs/pubs/PKCS/html/pkcs-7.html"> PKCS#7. The ASN.1 definition of this structure is
```
 ContentInfo ::= SEQUENCE { contentType ContentType, content [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL } ContentType ::= OBJECT IDENTIFIER 
```
contentType indicates the type of content. PKCS#7 specifies six content types, of which five are supported: {@link Data data}, {@link SignedData signedData}, {@link EnvelopedData envelopedData}, {@link SignedAndEnvelopedData signedAndEnvelopedData}, and {@link EncryptedData encryptedData}. All of these content types have registered OIDs.
The ContentInfo is also the general syntax of a complete PKCS#7 structure.
@author Volker Roth @version "$Id: ContentInfo.java,v 1.4 2000/12/07 13:21:52 vroth Exp $"

     */
    public static Certificate[] verifySignature(InputStream signature, InputStream 
            signatureBlock) throws IOException, GeneralSecurityException {


        BerInputStream bis = new BerInputStream(signatureBlock);
        ContentInfo info = (ContentInfo)ContentInfo.ASN1.decode(bis);      
        SignedData signedData = info.getSignedData();
        if (signedData == null) {
            throw new IOException(Messages.getString("security.173")); //$NON-NLS-1$
        }
        Collection encCerts = signedData.getCertificates();
        if (encCerts.isEmpty()) {

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                        Messages.getString("security.155")); //$NON-NLS-1$
            }
            // else: check if it is PKCS7
            if (second_asn1_tag == ASN1Constants.TAG_OID) {
                // it is PKCS7 ContentInfo structure, so decode it
                ContentInfo info = (ContentInfo) 
                    ((encoding != null)
                        ? ContentInfo.ASN1.decode(encoding)
                        : ContentInfo.ASN1.decode(inStream));
                // retrieve SignedData
                SignedData data = info.getSignedData();
                if (data == null) {
                    throw new CertificateException(
                            Messages.getString("security.154")); //$NON-NLS-1$
                }
                List certs = data.getCertificates();

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                        Messages.getString("security.155")); //$NON-NLS-1$
            }
            // else: check if it is PKCS7
            if (second_asn1_tag == ASN1Constants.TAG_OID) {
                // it is PKCS7 ContentInfo structure, so decode it
                ContentInfo info = (ContentInfo) 
                    ((encoding != null)
                        ? ContentInfo.ASN1.decode(encoding)
                        : ContentInfo.ASN1.decode(inStream));
                // retrieve SignedData
                SignedData data = info.getSignedData();
                if (data == null) {
                    throw new CRLException(
                            Messages.getString("security.154")); //$NON-NLS-1$
                }
                List crls = data.getCRLs();

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            if (encodingsArr[0].equals(encoding)) {
                // generate the object from PkiPath encoded form
                return (X509CertPathImpl) ASN1.decode(in);
            } else {
                // generate the object from PKCS #7 encoded form
                ContentInfo ci = (ContentInfo) ContentInfo.ASN1.decode(in);
                SignedData sd = ci.getSignedData();
                if (sd == null) {
                    throw new CertificateException(
                        Messages.getString("security.160")); //$NON-NLS-1$
                }
                List certs = sd.getCertificates();
                if (certs == null) {
                    // empty chain of certificates
                    certs = new ArrayList();
                }
                List result = new ArrayList();
                for (int i=0; i<certs.size(); i++) {
                    result.add(new X509CertImpl((Certificate) certs.get(i)));
                }
                return new X509CertPathImpl(result, PKCS7, ci.getEncoded());
            }
        } catch (IOException e) {
            throw new CertificateException(Messages.getString("security.15E", //$NON-NLS-1$
                    e.getMessage()));
        }

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            if (encodingsArr[0].equals(encoding)) {
                // generate the object from PkiPath encoded form
                return (X509CertPathImpl) ASN1.decode(in);
            } else {
                // generate the object from PKCS #7 encoded form
                ContentInfo ci = (ContentInfo) ContentInfo.ASN1.decode(in);
                SignedData sd = ci.getSignedData();
                if (sd == null) {
                    throw new CertificateException(
                        Messages.getString("security.160")); //$NON-NLS-1$
                }
                List certs = sd.getCertificates();
                if (certs == null) {
                    certs = new ArrayList();
                }
                List result = new ArrayList();
                for (int i=0; i<certs.size(); i++) {
                    result.add(new X509CertImpl((Certificate) certs.get(i)));
                }
                return new X509CertPathImpl(result, PKCS7, ci.getEncoded());
            }
        } catch (IOException e) {
            throw new CertificateException(Messages.getString("security.15E", //$NON-NLS-1$
                    e.getMessage()));
        }

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     */
    public static Certificate[] verifySignature(InputStream signature, InputStream 
            signatureBlock) throws IOException, GeneralSecurityException {


        BerInputStream bis = new BerInputStream(signatureBlock);
        ContentInfo info = (ContentInfo)ContentInfo.ASN1.decode(bis);      
        SignedData signedData = info.getSignedData();
        if (signedData == null) {
            throw new IOException(Messages.getString("security.173")); //$NON-NLS-1$
        }
        Collection encCerts = signedData.getCertificates();
        if (encCerts.isEmpty()) {

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codec.asn1.ASN1Integer

codec.asn1.ASN1Null

codec.asn1.ASN1ObjectIdentifier

codec.asn1.ASN1OctetString

codec.asn1.ASN1Opaque

codec.asn1.ASN1OpenType

codec.asn1.ASN1Sequence

codec.asn1.ASN1Set

codec.asn1.ASN1SetOf

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