s2i_ASN1_IA5STRING.3ossl - Man Page

convert objects from/to ASN.1/string representation

Synopsis

 #include <openssl/x509v3.h>

 char *i2s_ASN1_IA5STRING(X509V3_EXT_METHOD *method, ASN1_IA5STRING *ia5);
 ASN1_IA5STRING *s2i_ASN1_IA5STRING(X509V3_EXT_METHOD *method,
                                   X509V3_CTX *ctx, const char *str);
 char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, const ASN1_INTEGER *a);
 ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, const char *value);
 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
                            const ASN1_OCTET_STRING *oct);
 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
                                         X509V3_CTX *ctx, const char *str);
 char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, const ASN1_ENUMERATED *a);
 char *i2s_ASN1_ENUMERATED_TABLE(X509V3_EXT_METHOD *method,
                                const ASN1_ENUMERATED *e);

 char *i2s_ASN1_UTF8STRING(X509V3_EXT_METHOD *method,
                           ASN1_UTF8STRING *utf8);
 ASN1_UTF8STRING *s2i_ASN1_UTF8STRING(X509V3_EXT_METHOD *method,
                                      X509V3_CTX *ctx, const char *str);

Description

These functions convert OpenSSL objects to and from their ASN.1/string representation. This function is used for X509v3 extensions.

Notes

The letters i and s in i2s and s2i stand for “internal” (that is, an internal C structure) and string respectively. So i2s_ASN1_IA5STRING() converts from internal to string.

It is the caller's responsibility to free the returned string. In the i2s_ASN1_IA5STRING() function the string is copied and the ownership of the original string remains with the caller.

Return Values

i2s_ASN1_IA5STRING() returns the pointer to a IA5 string or NULL if an error occurs.

s2i_ASN1_IA5STRING() return a valid ASN1_IA5STRING structure or NULL if an error occurs.

i2s_ASN1_INTEGER() return a valid string or NULL if an error occurs.

s2i_ASN1_INTEGER() returns the pointer to a ASN1_INTEGER structure or NULL if an error occurs.

i2s_ASN1_OCTET_STRING() returns the pointer to a OCTET_STRING string or NULL if an error occurs.

s2i_ASN1_OCTET_STRING() return a valid ASN1_OCTET_STRING structure or NULL if an error occurs.

i2s_ASN1_ENUMERATED() return a valid string or NULL if an error occurs.

s2i_ASN1_ENUMERATED() returns the pointer to a ASN1_ENUMERATED structure or NULL if an error occurs.

s2i_ASN1_UTF8STRING() return a valid ASN1_UTF8STRING structure or NULL if an error occurs.

i2s_ASN1_UTF8STRING() returns the pointer to a UTF-8 string or NULL if an error occurs.

History

i2s_ASN1_UTF8STRING() and s2i_ASN1_UTF8STRING() were made public in OpenSSL 3.0.

Referenced By

The man pages i2s_ASN1_ENUMERATED.3ossl(3), i2s_ASN1_ENUMERATED_TABLE.3ossl(3), i2s_ASN1_IA5STRING.3ossl(3), i2s_ASN1_INTEGER.3ossl(3), i2s_ASN1_OCTET_STRING.3ossl(3), i2s_ASN1_UTF8STRING.3ossl(3), s2i_ASN1_INTEGER.3ossl(3), s2i_ASN1_OCTET_STRING.3ossl(3) and s2i_ASN1_UTF8STRING.3ossl(3) are aliases of s2i_ASN1_IA5STRING.3ossl(3).

2022-09-12 3.0.5 OpenSSL